Connecting Cisco Unified Communication Manager [v11.5.1] to CenturyLink IQ SIP Trunks via Cisco Unified Border Element v [IOS-XE 16.3.

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Connecting Cisco Unified Communication Manager [v11.5.1] to CenturyLink IQ SIP Trunks via Cisco Unified Border Element v11.5.2 [IOS-XE 16.3.2] May 3, 2017 Page 1 of 70

Table of Contents Introduction... 4 Network Topology... 5 System Components... 6 Hardware Requirements... 6 Software Requirements... 6 Features... 6 Features Supported... 6 Features Not Supported... 6 Caveats... 7 Configuration... 8 Configuring Cisco Unified Border Element... 8 Network Interface... 8 Global Cisco UBE settings... 11 Codecs... 12 Dial peer... 12 Configuration example... 16 Configuring CUCM 11.5 cluster... 46 Trunk configuration... 46 Routing configuration... 54 SIP Trunk Security Profile... 59 Fax Gateway Configuration... 59 Acronyms... 69 Important Information... 69 Test Results... Error Bookmark not defined. Cisco Service Provider Test Plan... Error Bookmark not defined. Century Link Dual Trunk Test Plan... Error Bookmark not defined. Page 2 of 70

Table of Figures Figure 1 Network Topology... 5 Figure 2 High Availability topology... 8 Figure 3 Add new Trunk in CUCM... 46 Figure 4 Add SIP Trunk Type... 47 Figure 5 SIP Trunk Device name and Device Pool selection... 48 Figure 6: Inbound call Configuration... 49 Figure 7 Trunk IP Address and security configuration... 50 Figure 8 Add a new SIP Trunk to FAX gateway... 51 Figure 9 Trunk Type and Device Protocol configuration... 51 Figure 10 SIP Trunk Device name and Device Pool selection... 52 Figure 11 Inbound call Routing Configuration... 53 Figure 12 Outbound Call Routing and Trunk Security Settings... 54 Figure 13 Add New Route Pattern to CUBE... 55 Figure 14 Route Pattern Configuration for CUBE... 56 Figure 15 Add New Route patter to Fax Gateway... 57 Figure 16 Route Pattern Configuration to Fax Gateway... 58 Figure 17 SIP Trunk Security Profile... 59 Page 3 of 70

Introduction Service Providers today, such as CenturyLink, are offering alternative methods to connect to the PSTN via their IP network. Most of these services utilize SIP as the primary signaling method and centralized IP to TDM POP gateways to provide on-net and off-net services. CenturyLink IQ SIP Trunk is a service provider offering that allows connection to the PSTN and may offer the end customer a viable alternative to traditional PSTN connectivity. A demarcation device between these services and customer owned services is recommended. As an intermediary device between CUCM 11.5.1 and CenturyLink network, Cisco Unified Border Element (Cisco UBE) v11.5.2 can be used. The Cisco Unified Border Element provides demarcation, security and inter-working and session control services for CUCM connected to CenturyLink IP network. This document assumes the reader is knowledgeable with the terminology and configuration of CUCM. Only configuration settings specifically required for CenturyLink interoperability are presented. Feature configuration and most importantly the dial plan are customer specific and need individual approach. This application note describes how to configure a CUCM 11.5.1 and Cisco Unified Border Element (Cisco UBE) v11.5.2 for connectivity to CenturyLink IQ SIP Trunking service. The deployment model covered in this application note is CUCM to PSTN via Cisco Unified Border Element v11.5.2 [IOS- XE] 16.3.2. Testing was performed in accordance to Cisco generic SIP Trunking test methodology and among features verified were basic calls, DTMF transport, Music on Hold (MOH), unattended and attended transfers, call forward, conferences and High Availability. Testing was performed in accordance to CenturyLink Dual Trunk Test with Fail-over and Load Balancing among the trunks. The Cisco Unified Border Element (Cisco UBE) configuration detailed in this document is based on a lab environment with a simple dial-plan used to ensure proper interoperability between CenturyLink SIP network and CUCM. The configuration described in this document details the important configuration settings to have enabled for interoperability to be successful and care must be taken by the network administrator deploying CUCM to interoperate to CenturyLink SIP Trunking network. Page 4 of 70

Network Topology Figure 1 Network Topology The network topology includes the CUCM Cluster, Unity Voicemail system, Cisco Fax gateway and 2 Cisco Endpoints. CUCM has a trunk configured to CUBE s Virtual IP Address. CenturyLink was used as the service provider with Dual SIP trunks to the Cisco UBE using the WAN Virtual IP Address. 2 Cisco Unified Border Elements are used here for High Availability. SIP Trunk transport type used between Cisco Unified Border Element and CUCM is TCP and to CenturyLink is UDP. CUCM and CUBE Settings: Setting Transport from CUBE to CUCM Transport from CUBE to CenturyLink Voice Mail Support Session Refresh Early Media support with PRACK G729 Conference Support Value TCP with RTP UDP with RTP YES YES YES YES Page 5 of 70

System Components Hardware Requirements Cisco UBE on Cisco ISR 4431 router CUCM cluster on UCS, 1 Publisher node and 2 Subscriber nodes Cisco 2851 with FXS ports and Analog Fax machine Generic Cisco IP-Phones Software Requirements CUBE-Version: 11.5.2 running IOS-XE 16.3.2 CUCM UCOS for 1 Publisher and 2 Subscriber Cisco IOS v12.4 for the fax gateway Features Features Supported Incoming and outgoing off-net calls using G711 and G729 Cisco Multi-Tenant with Failover and Load Balancing in SIP Trunks. International Calls and digit manipulations Call Conference with G729 support CPE Voice Mail support Call hold & Resume with and without MoH Unattended and Attended Call transfer Call forward (all, busy and no answer) DTMF (RFC2833) Fax Pass-through IP-PBX Calling number privacy High Availability Features Not Supported Blind Call transfer Page 6 of 70

Caveats As of writing this application note, CenturyLink supports G.711 pass-through for faxing on IQ SIP Trunk. Currently T.38 is not supported. The Fax protocol is indicated and set at the time of implementation of the service and CenturyLink recommends that customers use our CenturyLink trial process to confirm Fax capability prior to full deployment. Caller ID updates are not observed on attended call transfer scenarios. Testing is done with only one IP PBX. Workaround is done for SIP header manipulations for Register, Call Forward and Call Transfer. The CUBE HA tested here is layer 2 box to box CUBE redundancy. Page 7 of 70

Configuration Configuring Cisco Unified Border Element Network Interface The IP address used are for illustration only, the actual IP address can vary. The Active/Standby pair share the same virtual IP address and continually exchange status messages. Figure 2 High Availability topology Page 8 of 70

CUBE 1: interface GigabitEthernet0/0/0 ip address 10.64.4.19 255.255.0.0 media-type rj45 negotiation auto interface GigabitEthernet0/0/1 no ip address shutdown media-type rj45 negotiation auto interface GigabitEthernet0/0/2 ip address 10.80.22.74 255.255.255.0 media-type rj45 negotiation auto redundancy rii 1 redundancy group 1 ip 10.80.22.100 exclusive interface GigabitEthernet0/0/3 description Wan Interface ip address 192.65.79.140 255.255.255.128 media-type rj45 negotiation auto redundancy rii 2 redundancy group 1 ip 192.65.79.155 exclusive Page 9 of 70

CUBE 2: interface GigabitEthernet0/0/0 ip address 10.64.4.20 255.255.0.0 media-type rj45 negotiation auto interface GigabitEthernet0/0/1 no ip address shutdown media-type rj45 negotiation auto interface GigabitEthernet0/0/2 description WAN ip address 10.80.22.75 255.255.255.0 media-type rj45 negotiation auto redundancy rii 1 redundancy group 1 ip 10.80.22.100 exclusive interface GigabitEthernet0/0/3 description Wan Interface ip address 192.65.79.141 255.255.255.128 media-type rj45 negotiation auto redundancy rii 2 redundancy group 1 ip 192.65.79.155 exclusive Page 10 of 70

Global Cisco UBE settings In order to enable Cisco UBE IP2IP SBC functionality, following command has to be entered: voice service voip ip address trusted list no ip address trusted authenticate rtcp keepalive address-hiding mode border-element license capacity 20 allow-connections sip to sip redundancy-group 1 no supplementary-service sip moved-temporarily no supplementary-service sip refer supplementary-service media-renegotiate redirect ip2ip fax protocol pass-through g711ulaw sip bind control source-interface GigabitEthernet0/0/2 bind media source-interface GigabitEthernet0/0/2 session refresh asserted-id pai early-offer forced midcall-signaling passthru pass-thru subscribe-notify-events all pass-thru content unsupp sip-profiles inbound sip-profiles 1 Explanation Command allow-connections sip to sip redundancy-group 1 rtcp keepalive Description Allow IP2IP connections between two SIP call legs Enable High Availability for the VoIP service Enables the CUBE to send rtcp keepalive packets for the session keepalive Page 11 of 70

fax protocol early-offer forced asserted-id Specifies the fax protocol Enables SIP Delayed-Offer to Early-Offer globally Specifies the privacy header in the outgoing SIP requests and response messages Codecs G729 is used primarily towards CenturyLink until specified otherwise. voice class codec 1 codec preference 1 g711ulaw codec preference 2 g729r8 voice class codec 2 codec preference 1 g729r8 codec preference 2 g711ulaw Dial peer Outbound Dial-peer to CenturyLink: dial-peer voice 100 voip description Outbound peer to CenturyLink Primary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk1_ip>:5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw Page 12 of 70

no vad dial-peer voice 102 voip description Outbound peer to CenturyLink Secondary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk2_ip>:5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 200 voice-class sip tenant 20 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Inbound Dial-peer from CenturyLink: dial-peer voice 111 voip description Inbound peer match FROM Centurylink session protocol sipv2 session transport udp incoming called-number 612356599. voice-class codec 1 voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Page 13 of 70

Outbound Dial-peer to CUCM: dial-peer voice 200 voip description Outbound peer to CUCM PUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.2:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 202 voip description Outbound peer to CUCM SUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.3:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Page 14 of 70

Inbound Dial-peer from CUCM: dial-peer voice 201 voip description Inbound peer match FROM CUCM session protocol sipv2 session transport tcp incoming called-number.t voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Page 15 of 70

Configuration example The following configuration snippet contains a sample configuration of Cisco UBE with all parameters mentioned previously. Active Cisco UBE: version 16.3 service timestamps debug datetime msec service timestamps log datetime msec no platform punt-keepalive disable-kernel-core hostname ISR4KR1 boot-start-marker boot system flash isr4400-universalk9.16.03.02.spa.bin boot-end-marker vrf definition Mgmt-intf address-family ipv4 exit-address-family address-family ipv6 exit-address-family enable password ******** Page 16 of 70

no aaa new-model ip name-server 10.64.4.10 ip domain name voip.centurylink.com subscriber templating Page 17 of 70

multilink bundle-name authenticated voice service voip ip address trusted list no ip address trusted authenticate rtcp keepalive address-hiding mode border-element license capacity 20 allow-connections sip to sip redundancy-group 1 no supplementary-service sip moved-temporarily no supplementary-service sip refer supplementary-service media-renegotiate redirect ip2ip fax protocol pass-through g711ulaw sip bind control source-interface GigabitEthernet0/0/2 bind media source-interface GigabitEthernet0/0/2 Page 18 of 70

session refresh asserted-id pai early-offer forced midcall-signaling passthru pass-thru subscribe-notify-events all pass-thru content unsupp sip-profiles inbound sip-profiles 1 voice class codec 1 codec preference 1 g711ulaw codec preference 2 g729r8 voice class codec 2 codec preference 1 g729r8 codec preference 2 g711ulaw voice class sip-profiles 1 request REGISTER sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request REGISTER sip-header To modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" voice class sip-profiles 100 request ANY sip-header Cisco-Guid remove response ANY sip-header Cisco-Guid remove request ANY sip-header User-Agent remove response ANY sip-header User-Agent remove Page 19 of 70

request INVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request INVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request INVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request REINVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request REINVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request REINVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" voice class sip-profiles 200 request ANY sip-header Cisco-Guid remove response ANY sip-header Cisco-Guid remove request ANY sip-header User-Agent remove response ANY sip-header User-Agent remove request INVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request INVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request INVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request REINVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request REINVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request REINVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" voice class tenant 10 Page 20 of 70

registrar ipv4:<trunk1_ip>:5100 expires 3600 credentials number 7209254720 username 263160-7209254720 password 7 ********************* realm voip.centurylink.com authentication username 263160-7209254720 password 7 ***************** realm voip.centurylink.com no remote-party-id retry invite 2 timers connect 100 sip-server ipv4:<trunk1_ip>:5100 connection-reuse bind control source-interface GigabitEthernet0/0/3 bind media source-interface GigabitEthernet0/0/3 voice class tenant 20 registrar ipv4:<trunk2_ip>:5100 expires 3600 credentials number 7209254721 username 263160-7209254721 password 7 **************** realm voip.centurylink.com authentication username 263160-7209254721 password 7 ***************** realm voip.centurylink.com no remote-party-id retry invite 2 timers connect 100 sip-server ipv4:<trunk2_ip>:5100 connection-reuse bind control source-interface GigabitEthernet0/0/3 bind media source-interface GigabitEthernet0/0/3 Page 21 of 70

voice translation-rule 1 voice translation-rule 2 rule 1 /6123565991/ /5991/ rule 2 /6123565992/ /5992/ rule 3 /6123565993/ /5993/ voice translation-rule 3 voice translation-rule 4 rule 1 /^9\(...$\)/ /\1/ rule 2 /^9\(...$\)/ /\1/ rule 3 /^9\(...$\)/ /\1/ voice translation-profile ctl translate calling 3 translate called 4 voice translation-profile cucm translate calling 1 translate called 2 voice-card 0/1 no watchdog Page 22 of 70

license udi pid ISR4431/K9 sn FOC18261KJL license accept end user agreement license boot level appxk9 license boot level uck9 license boot level securityk9 diagnostic bootup level minimal spanning-tree extend system-id username cisco privilege 15 secret 5 ********************** username user password 0 user redundancy mode none application redundancy group 1 name voice-b2bha priority 100 failover threshold 75 timers delay 30 reload 60 control GigabitEthernet0/0/0 protocol 1 data GigabitEthernet0/0/0 track 1 shutdown track 2 shutdown Page 23 of 70

vlan internal allocation policy ascending track 1 interface GigabitEthernet0/0/2 line-protocol track 2 interface GigabitEthernet0/0/3 line-protocol interface GigabitEthernet0/0/0 ip address 10.64.4.19 255.255.0.0 media-type rj45 negotiation auto interface GigabitEthernet0/0/1 no ip address shutdown media-type rj45 negotiation auto interface GigabitEthernet0/0/2 description WAN ip address 10.80.22.74 255.255.255.0 media-type rj45 negotiation auto redundancy rii 1 redundancy group 1 ip 10.80.22.100 exclusive interface GigabitEthernet0/0/3 description Wan Interface ip address 192.65.79.141 255.255.255.128 Page 24 of 70

media-type rj45 negotiation auto redundancy rii 2 redundancy group 1 ip 192.65.79.155 exclusive interface Service-Engine0/1/0 interface GigabitEthernet0 vrf forwarding Mgmt-intf no ip address negotiation auto interface Vlan1 no ip address shutdown ip forward-protocol nd ip http server no ip http secure-server ip route 0.0.0.0 0.0.0.0 192.65.79.129 ip route 10.64.0.0 255.255.0.0 10.64.1.1 ip route 172.16.0.0 255.255.0.0 10.80.22.1 Page 25 of 70

control-plane voice-port 0/1/0 cptone IN shutdown caller-id enable voice-port 0/1/1 mgcp behavior rsip-range tgcp-only mgcp behavior comedia-role none mgcp behavior comedia-check-media-src disable mgcp behavior comedia-sdp-force disable mgcp profile default dspfarm profile 1 transcode associate application CUBE shutdown dial-peer voice 100 voip Page 26 of 70

description Outbound peer to CenturyLink Primary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk1_ip>:5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 102 voip description Outbound peer to CenturyLink Secondary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk2_ip>::5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 200 voice-class sip tenant 20 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw Page 27 of 70

no vad dial-peer voice 111 voip description Inbound peer match FROM Centurylink session protocol sipv2 session transport udp incoming called-number 612356599. voice-class codec 1 voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 200 voip description Outbound peer to CUCM PUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.2:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Page 28 of 70

dial-peer voice 201 voip description Inbound peer match FROM CUCM session protocol sipv2 session transport tcp incoming called-number.t voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 202 voip description Outbound peer to CUCM SUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.3:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad sip-ua no remote-party-id Page 29 of 70

retry invite 1 timers options 1000 connection-reuse line con 0 exec-timeout 0 0 logging synchronous stopbits 1 line aux 0 privilege level 15 stopbits 1 line vty 0 exec-timeout 0 0 password ******** no activation-character logging synchronous login transport preferred ssh transport input telnet ssh line vty 1 4 exec-timeout 0 0 password ************ logging synchronous login transport input telnet ssh ntp server 10.10.10.5 Page 30 of 70

end Standby Cisco UBE: Current configuration : 9385 bytes Last configuration change at 15:17:17 UTC Mon Mar 13 2017 version 16.3 service timestamps debug datetime msec service timestamps log datetime msec no platform punt-keepalive disable-kernel-core hostname ISR4KR2 boot-start-marker boot system flash isr4400-universalk9.16.03.02.spa.bin boot-end-marker vrf definition Mgmt-intf address-family ipv4 exit-address-family address-family ipv6 exit-address-family Page 31 of 70

logging buffered 9999999 no logging console enable password *********** no aaa new-model ipc zone default association 1 no shutdown ip name-server 10.64.4.10 no ip domain lookup Page 32 of 70

subscriber templating multilink bundle-name authenticated cts logging verbose voice rtp send-recv voice service voip ip address trusted list no ip address trusted authenticate rtcp keepalive address-hiding mode border-element license capacity 20 allow-connections sip to sip redundancy-group 1 no supplementary-service sip moved-temporarily no supplementary-service sip refer supplementary-service media-renegotiate redirect ip2ip Page 33 of 70

fax protocol pass-through g711ulaw sip bind control source-interface GigabitEthernet0/0/2 bind media source-interface GigabitEthernet0/0/2 session refresh asserted-id pai early-offer forced midcall-signaling passthru pass-thru subscribe-notify-events all pass-thru content unsupp sip-profiles inbound sip-profiles 1 voice class codec 1 codec preference 1 g711ulaw codec preference 2 g729r8 voice class codec 2 codec preference 1 g729r8 codec preference 2 g711ulaw voice class sip-profiles 1 request REGISTER sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request REGISTER sip-header To modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" voice class sip-profiles 100 Page 34 of 70

request ANY sip-header Cisco-Guid remove response ANY sip-header Cisco-Guid remove request ANY sip-header User-Agent remove response ANY sip-header User-Agent remove request INVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request INVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request INVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request REINVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" request REINVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request REINVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254720@voip.centurylink.com>" voice class sip-profiles 200 request ANY sip-header Cisco-Guid remove response ANY sip-header Cisco-Guid remove request ANY sip-header User-Agent remove response ANY sip-header User-Agent remove request INVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request INVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" request INVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request REINVITE sip-header Diversion modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" request REINVITE sip-header From modify "(<.*:.*)(@.*>)" "\1@voip.centurylink.com>" Page 35 of 70

request REINVITE sip-header P-Asserted-Identity modify "(<.*:.*)(@.*)" "<sip:7209254721@voip.centurylink.com>" voice class tenant 10 registrar ipv4:<trunk1_ip>:5100 expires 3600 credentials number 7209254720 username 263160-7209254720 password 7 ******************* realm voip.centurylink.com authentication username 263160-7209254720 password 7 ****************** realm voip.centurylink.com no remote-party-id retry invite 2 timers connect 100 sip-server ipv4:<trunk1_ip>:5100 connection-reuse bind control source-interface GigabitEthernet0/0/3 bind media source-interface GigabitEthernet0/0/3 voice class tenant 20 registrar ipv4:<trunk1_ip>:5100 expires 3600 credentials number 7209254721 username 263160-7209254721 password 7 ****************** realm voip.centurylink.com authentication username 263160-7209254721 password 7 ********************* realm voip.centurylink.com no remote-party-id retry invite 2 timers connect 100 sip-server ipv4:<trunk1_ip>:5100 connection-reuse bind control source-interface GigabitEthernet0/0/3 Page 36 of 70

bind media source-interface GigabitEthernet0/0/3 voice translation-rule 1 voice translation-rule 2 rule 1 /6123565991/ /5991/ rule 2 /6123565992/ /5992/ rule 3 /6123565993/ /5993/ rule 4 /6123565994/ /2302/ voice translation-rule 3 voice translation-rule 4 rule 1 /^9\(...$\)/ /\1/ rule 2 /^9\(...$\)/ /\1/ rule 3 /^9\(...$\)/ /\1/ voice translation-profile ctl translate calling 3 translate called 4 voice translation-profile cucm translate calling 1 translate called 2 Page 37 of 70

license udi pid ISR4431/K9 sn FOC18232988 license boot level appxk9 license boot level uck9 license boot level securityk9 diagnostic bootup level minimal spanning-tree extend system-id username cisco privilege 15 secret 5 ************************** redundancy mode none application redundancy group 1 name voice-b2bha control GigabitEthernet0/0/0 protocol 1 data GigabitEthernet0/0/0 track 1 shutdown track 2 shutdown vlan internal allocation policy ascending track 1 interface GigabitEthernet0/0/2 line-protocol track 2 interface GigabitEthernet0/0/3 line-protocol Page 38 of 70

interface GigabitEthernet0/0/0 ip address 10.64.4.20 255.255.0.0 media-type rj45 negotiation auto interface GigabitEthernet0/0/1 no ip address shutdown media-type rj45 negotiation auto interface GigabitEthernet0/0/2 ip address 10.80.22.75 255.255.255.0 media-type rj45 negotiation auto redundancy rii 1 redundancy group 1 ip 10.80.22.100 exclusive interface GigabitEthernet0/0/3 description Wan Interface ip address 192.65.79.140 255.255.255.128 media-type rj45 negotiation auto redundancy rii 2 redundancy group 1 ip 192.65.79.155 exclusive interface GigabitEthernet0 Page 39 of 70

vrf forwarding Mgmt-intf no ip address shutdown negotiation auto interface Vlan1 no ip address shutdown ip forward-protocol nd no ip http server no ip http secure-server ip route 0.0.0.0 0.0.0.0 192.65.79.129 ip route 10.64.0.0 255.255.0.0 10.64.1.1 ip route 10.80.10.0 255.255.255.0 10.80.22.1 ip route 10.80.22.0 255.255.255.0 10.80.22.1 ip route 172.16.0.0 255.255.0.0 10.80.22.1 control-plane Page 40 of 70

mgcp behavior rsip-range tgcp-only mgcp behavior comedia-role none mgcp behavior comedia-check-media-src disable mgcp behavior comedia-sdp-force disable mgcp profile default dspfarm profile 1 conference security shutdown dial-peer voice 100 voip description Outbound peer to CenturyLink Primary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk1_ip>:5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte Page 41 of 70

fax protocol pass-through g711ulaw no vad dial-peer voice 102 voip description Outbound peer to CenturyLink Secondary translation-profile outgoing ctl destination-pattern.t session protocol sipv2 session target ipv4:<trunk2_ip>:5100 voice-class codec 1 voice-class sip early-offer forced voice-class sip profiles 200 voice-class sip tenant 20 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 111 voip description Inbound peer match FROM Centurylink session protocol sipv2 session transport udp incoming called-number 612356599. voice-class codec 1 voice-class sip profiles 100 voice-class sip tenant 10 voice-class sip bind control source-interface GigabitEthernet0/0/3 voice-class sip bind media source-interface GigabitEthernet0/0/3 Page 42 of 70

dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 200 voip description Outbound peer to CUCM PUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.2:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad dial-peer voice 201 voip description Inbound peer match FROM CUCM session protocol sipv2 session transport tcp incoming called-number.t voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad Page 43 of 70

dial-peer voice 202 voip description Outbound peer to CUCM SUB translation-profile outgoing cucm destination-pattern 612356599. session protocol sipv2 session target ipv4:10.80.20.3:5060 session transport tcp voice-class codec 1 voice-class sip bind control source-interface GigabitEthernet0/0/2 voice-class sip bind media source-interface GigabitEthernet0/0/2 dtmf-relay rtp-nte fax protocol pass-through g711ulaw no vad sip-ua no remote-party-id retry invite 1 timers options 1000 connection-reuse line con 0 stopbits 1 line aux 0 stopbits 1 line vty 0 session-timeout 90 exec-timeout 960 0 password ******** Page 44 of 70

no activation-character logging synchronous login transport preferred ssh transport input all stopbits 1 line vty 1 4 exec-timeout 960 0 password ******** logging synchronous login transport input all end Page 45 of 70

Configuring CUCM 11.5 cluster Trunk configuration from CUCM to the LAN side of the CUBE. Trunk configuration Trunk to CUBE Open Cisco Unified CM Administration and navigate to Devices Trunk Add New Figure 3 Add new Trunk in CUCM Click on Add New button and select the Trunk Type and Device Protocol as shown below. Page 46 of 70

Figure 4 Add SIP Trunk Type Select Trunk Type as SIP Trunk and Protocol as SIP and select Next. Page 47 of 70

Figure 5 SIP Trunk Device name and Device Pool selection Page 48 of 70

Please configure the Inbound and Outbound call settings as shown below Figure 6: Inbound call Configuration Page 49 of 70

Figure 7 Trunk IP Address and security configuration Configure the Virtual LAN IP address of the CUBE and the port number Configure the SIP Profile and SIP trunk security profiles as shown below. The rest of the configuration is all default. Click Save and Reset after completion. Trunk to FAX gateway Page 50 of 70

Open Cisco Unified CM Administration and navigate to Devices Trunk Add New Figure 8 Add a new SIP Trunk to FAX gateway Click on Add New button and select the Trunk Type and Device Protocol as shown below. Figure 9 Trunk Type and Device Protocol configuration Select Trunk Type as SIP Trunk and Protocol as SIP and select Next. Page 51 of 70

Figure 10 SIP Trunk Device name and Device Pool selection Please configure the Inbound and Outbound call settings as shown below Page 52 of 70

Figure 11 Inbound call Routing Configuration Page 53 of 70

Figure 12 Outbound Call Routing and Trunk Security Settings Configure IP address of the FAX Gateway and the port number Configure the SIP Profile and SIP trunk security profiles as shown below. The rest of the configuration is all default. Click Save and Reset after completion. Routing configuration Page 54 of 70

Route Pattern to CUBE Open Cisco Unified CM Administration and navigate to Call Routing Route/Hunt Route Pattern Click on Add New button to add a new route pattern to CUBE Figure 13 Add New Route Pattern to CUBE Page 55 of 70

Figure 14 Route Pattern Configuration for CUBE Click on Save button to complete the route pattern configuration Route Pattern to Fax Gateway Page 56 of 70

Open Cisco Unified CM Administration and navigate to Call Routing Route/Hunt Route Pattern Click on Add New button to add a new route pattern to Fax Gateway Figure 15 Add New Route patter to Fax Gateway Page 57 of 70

Figure 16 Route Pattern Configuration to Fax Gateway Page 58 of 70

SIP Trunk Security Profile We have used the default Non-Secure SIP Trunk Security Profile. Figure 17 SIP Trunk Security Profile Fax Gateway Configuration Page 59 of 70

The following configuration snippet contains a sample configuration of Cisco FAX Gateway. Current configuration : 9949 bytes Last configuration change at 16:34:05 IST Wed Apr 19 2017 by cisco version 15.1 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption hostname faxgateway boot-start-marker boot-end-marker enable password ******** aaa new-model aaa authentication login local_auth local aaa session-id common clock timezone IST 5 30 network-clock-participate wic 2 Page 60 of 70

network-clock-participate wic 3 dot11 syslog ip source-route ip cef multilink bundle-name authenticated isdn switch-type primary-qsig voice rtp send-recv voice service pots voice service voip address-hiding allow-connections sip to sip no supplementary-service sip handle-replaces redirect ip2ip fax protocol pass-through g711ulaw no fax-relay sg3-to-g3 Page 61 of 70

sip midcall-signaling passthru g729 annexb-all voice class codec 3 codec preference 1 g711ulaw voice class codec 2 codec preference 1 g711alaw codec preference 2 g729br8 codec preference 3 g729r8 voice class codec 1 codec preference 1 g729r8 codec preference 2 g711ulaw voice class codec 4 codec preference 1 g711alaw codec preference 2 g722-64 voice-card 0 crypto pki token default removal timeout 0 Page 62 of 70

license udi pid CISCO2851 sn FHK1137F4LY controller E1 0/2/0 pri-group timeslots 1-31 service mgcp controller E1 0/3/0 clock source internal pri-group timeslots 1-31 ip tftp source-interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 172.16.31.50 255.255.255.0 duplex auto speed auto interface Service-Engine0/0 no ip address shutdown Page 63 of 70

interface GigabitEthernet0/1 no ip address ip nat outside ip virtual-reassembly in shutdown duplex auto speed auto interface Serial0/2/0:15 no ip address encapsulation hdlc isdn switch-type primary-qsig isdn timer T310 120000 isdn protocol-emulate network isdn incoming-voice voice isdn map address.* plan isdn type national isdn bind-l3 ccm-manager isdn send-alerting isdn sending-complete no cdp enable interface Serial0/3/0:15 no ip address encapsulation hdlc isdn switch-type primary-qsig isdn timer T310 120000 isdn protocol-emulate network isdn incoming-voice voice no cdp enable Page 64 of 70

interface Service-Engine1/0 no ip address shutdown ip forward-protocol nd ip http server no ip http secure-server ip route 0.0.0.0 0.0.0.0 172.16.31.1 ipv6 route ::/0 2620:96:C000:8::1 snmp-server community public RO snmp-server location Chennai ipv6 access-list ipv6 permit ipv6 any any control-plane voice-port 0/0/0 no echo-cancel enable no vad cptone IN Page 65 of 70

station-id number 6123565991 caller-id enable voice-port 0/0/1 no echo-cancel enable no vad voice-port 0/3/0:15 voice-port 0/2/0:15 voice-port 0/1/0 no echo-cancel enable no vad voice-port 0/1/1 no echo-cancel enable no vad dspfarm profile 1 transcode shutdown dial-peer voice 111 pots service session destination-pattern 5991 no digit-strip port 0/0/0 forward-digits all Page 66 of 70

dial-peer voice 113 voip description Gateway to CUCM shutdown destination-pattern.t session protocol sipv2 session target ipv4:10.80.20.2:5060 session transport udp incoming called-number 5991 voice-class codec 1 dtmf-relay rtp-nte fax protocol pass-through g711ulaw sip-ua no remote-party-id retry register 5 no timers hold protocol mode dual-stack line con 0 line aux 0 line 66 no activation-character no exec transport preferred none transport input all Page 67 of 70

line 194 no activation-character no exec transport preferred none transport input all transport output all line vty 0 4 session-timeout 180 exec-timeout 0 0 login authentication local_auth transport input all scheduler allocate 20000 1000 end Page 68 of 70

Acronyms Acronym CPE Cisco UBE Cisco UCM MTP POP PSTN ESBC SCCP SIP Definitions Customer Premise Equipment Cisco Unified Border Element Cisco Unified Communications Manager Media Termination Point Point of Presence Public Switched Telephone Network Enterprise Session Border Controller Skinny Client Control Protocol Session Initiation Protocol Important Information THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Page 69 of 70

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