Application Note AN-10238 April 26, 2010 How to configure GFI Software/Brooktrout SR140 with the ShoreTel System Product: ShoreTel UC System, ShoreTel 10 Table of Contents Introduction.............................................................................. 1 The old way and the new T.38 way............................................................ 2 Set up with GFI Fax server................................................................... 2 ShoreTel Director Configuration.............................................................. 3 Configuration with GFI/Brooktrout SR140....................................................... 4 Important considerations for ShoreTel native T.38 support......................................... 5 Record of Changes......................................................................... 5 Introduction ShoreTel 10 adds native T.38 into most ShoreTel switches, providing easier configuration, even more reliable connections and a highly cost-effective installation when connecting to third party fax servers or services. These notes cover configuration with GFI/Brooktrout software. The following switches are not supported by T.38. For these and older switches, G711/L16 clear channel is used for fax purposes. ShoreTel Voice Switch 8 ShoreTel Voice Switch 12 ShoreTel Voice Switch 120 ShoreTel Voice Switch T1 ShoreTel Voice Switch E1 ShoreTel Voice Switch TW ShoreTel Voice Switch 24 and ShoreTel Voice Switch 24a The technical level of the information in this document requires a working knowledge of the ShoreTel system. Please note that Brooktrout FaxMaker driver version 14 has been tested on Windows 2003. Please note that ShoreTel Global Services DO NOT support third-party product or service configurations directly. Instructions to set up third-party products are provided here for convenience. If you have questions about the third-party product configuration, please contact the relevant support organization. How to configure GFI Software/Brooktrout SR140 with the ShoreTel System Application Note AN-10238 Page 1
The old way and the new T.38 way Set up with GFI Fax server Prior to ShoreTel 10, the GFI fax server had to be configured with a trunk card and had to be co-located with a ShoreTel Voice Switch, as depicted below: With native T.38, the trunk card is replaced by software from Brooktrout, called Brooktrout SR 140. The GFI server and the ShoreTel Voice Switch no longer need to be sitting next to each other. They can be located in different sites, as T.38 provides an increased resiliency to packet losses. The new set up is illustrated below: How to configure GFI Software/Brooktrout SR140 with the ShoreTel System Application Note AN-10238 Page 2
ShoreTel Director Configuration Please note that no additional license is required to enable this integration. 1. Add the GFI server as SIP Server in ShoreTel Director using protocol UDP. 2. Check only Allow Fax Redirect to This Server. How to configure GFI Software/Brooktrout SR140 with the ShoreTel System Application Note AN-10238 Page 3
Configuration with GFI/Brooktrout SR140 1. From GFI sever PC, click start/programs/gfi FAXmaker Brooktrout TR1034 Driver/Brooktrout Configuration Tool 2. Follow the instructions onto the configuration page, select SIP in IP Call Control Modules 3. Set IP Parameters: Primary Proxy Server is ShoreTel Voice Switch Proxy, Contact Address is GFI server IP address 4. Adjust the T.38 Parameters: UDPTL Redundancy Depth Image is adjustable up to 2. How to configure GFI Software/Brooktrout SR140 with the ShoreTel System Application Note AN-10238 Page 4
Important considerations for ShoreTel native T.38 support In order to have fax calls re-directed to the target user, T.38 needs to be set up to use SIP Trunks. Having T.38 setup as a SIPUM server will place all faxes into one folder. The fax machine/fax server behind ShoreTel PBX should disable V34 feature to avoid using the G711/Linear clear channel. V.34 faxes are not supported. Customers who have upgraded to ShoreTel 10 and higher builds and utilizing V.34 modem/super Group3 fax at the higher rate will continue to work through T.38, however, the performance will be reduced to the lower rate. Changing the setting to non-t38 data terminal/fax server will not guarantee the higher rate automatically. The negotiation is based on the network condition and signal noise ratio over the link A speed of up to 9600 bps is supported with V.29. ShoreTel only supports T.38 in udptl form. T.38 calls in RTP or TCP form are not supported. ShoreTel does not support either IP media or RFC2833-based fax tone detection (in RFC2833, ShoreTel only supports DTMF, no named telephony events), therefore ShoreTel cannot detect fax tone coming from an SIP end-point with the exception of a SIP connection that is established with a physical port on the ShoreTel Voice Switch. In this case, the ShoreTel Voice Switch can detect a fax tone from the SIP endpoint and either switch to fax mode or redirect the call. ShoreTel depends on fax CNG tone detection or T.38 invite to redirect an incoming fax call. If the fax connection is established with one SIP-based endpoint (such as SIP extension or SIP trunk), ShoreTel depends on the SIP invite to either establish a fax connection or redirect the call to a preconfigured fax device. T.38 support is not supported on SIP-BRI. Capacity: Each ShoreTel Voice Switch supports up to 8 concurrent faxes over T.38. GFI supports up to 120 concurrent faxes per physical server. The maximum simultaneous faxes per switch can only be achieved in T1 switches. Record of Change This application note is subject to change. Please submit any updates or corrections to info@shoretel.com Issue Author Reason for Change Date 1.0 Laurent Dinard Initial Release Dec 10, 2009 1.1 Laurent Dinard Adjusted numbers of faxes supported, removed SIP Trunk support April 26, 2010 WORLD HEADQUARTERS EMEA ASIA PACIFIC 960 Stewart Drive, Sunnyvale, CA 94085, www.shoretel.com +1 (800) 425-9385 Toll Free. +1 (408) 331-3300 Tel. +1 (408) 331-3333 Fax. +1 800 408 33133 Freephone. +44 (1628) 826300 Tel. +61 (0)2 9959 85000 Tel. Copyright 2010 ShoreTel. All rights reserved. The ShoreTel logo, ShoreTel, ShoreCare, ShoreGear, ShoreWare, ShorePhone and ControlPoint are registered trademarks of ShoreTel, Inc. in the United States and/or other countries. All other copyrights and trademarks herein are the property of their respective owners. Specifications are subject to change without notice. AN-10238