Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Digital Signal Conversion Option

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Enabling Dual Chassis Fault Tolerance with Intel NetStructure SS7 Boards

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Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Digital Signal Conversion Option Datasheet Telecom SS7G21 and SS7G22 Signaling Gateways DSC Option The Intel NetStructure SS7G21 and SS7G22 Signaling Gateways are key building blocks in the next generation of networks and service platforms. They interface to both Signaling System 7 (SS7) and Internet Protocol (IP) networks, so SS7 information can be carried to and from IP-based applications such as softswitches. With the addition of optional Digital Signal Conversion (DSC) software, the SS7G21 and SS7G22 can operate as a protocol converter, so developers can easily perform protocol conversions between SS7 circuit-related protocols and access-signaling protocols, including ISDN and SS7 over M2PA for long-haul configurations. Features Lets network designers interconnect a variety of off-the-shelf network elements that may be running incompatible protocols Network designers need not request time- consuming and expensive modifications to third-party network equipment Provides protocol interworking between any pair of supported telephony protocols for both network protocols (such as SS7 or SS7 over SIGTRAN M2PA) and access protocols (such as DPNSS, ISDN, etc.) A higher level of SS7 building-block integration with ISDN and SIGTRAN Housed in telco-grade NEBS-compliant chassis with built-in resiliency for SS7 links and networks that comes as a packaged SS7 building block Intelligent call routing capabilities Simple configuration and quick installation Benefits Developers can focus on application development and deployments that address the needs of premium SS7 market segments instead of SS7 integration Proven and highly-resilient platform which has been engineered for central office deployments The signaling gateway can be used as a non-blocking switch and can perform parameter manipulation to support the intelligent call routing capabilities required for value-added services Allows for an easier installation that does not require development when providing protocol conversion (e.g., between SS7 and ISDN) Note: Only the SS7G21 can accommodate DPNSS, ISDN, or QSIG conversions.

Datasheet Intel NetStructure SS7G21 and SS7G22 Signaling Gateways The DSC functionality is provided as a software option license on the SS7G21 and SS7G22 signaling gateways. To enable this functionality, a DSC software license must be ordered and installed on the system. If the DSC software is not installed or is deactivated, the unit performs as a signaling interface unit (SIU) supporting the MTP3 protocol. For information about the SS7G21 and SS7G22 Signaling Gateways without the DSC software option, visit http://www.intel.com/network/csp/ products/9369web.htm. Expanded Capabilities The signaling gateways with the DSC option represent a higher level of SS7 building-block integration, letting original equipment manufacturers (OEMs) concentrate on application design. A simple ISDN application can now address premium SS7 market segments. This strategy can drastically reduce deployment time without compromising quality and reliability. The SS7G21 and SS7G22 let users rely on proven networkgrade platforms and concentrate on building high-value applications. Also, because the platforms have worldwide conformance certification, deployment is simpler and faster. Protocol Conversion The DSC option provides an internal signaling architecture that converts each protocol variant internally into a common signaling protocol that can then be converted back into any other protocol supported by the unit. As a result, any signaling protocol variant, once supported, can automatically work with any other protocol or variant supported. Protocol conversion is implemented with finite state machines, protocol procedures, and timers within the DSC option, rather than simple mapping with messages that could lead to poor interconnect functionality. The SS7G21 with the DSC software option permits ISDN systems (or previously incompatible SS7 equipment) to interconnect with public network systems, enabling the creation of highly advanced value-added services. The platforms may also be used to significantly enhance application capabilities through intelligent call routing, digit analysis, and intrusive parameter manipulation, which are included with the DSC option. For existing systems that use ISDN or a single SS7 variant, new market segments may be addressed using the SS7G21 and SS7G22 with the DSC option. A service node or switch may be interconnected to new network types, without the need for re-engineering or lengthy testing. The SS7G21 and SS7G22 with DSC provide compatibility with a wide range of networks and signaling types through a simple configuration, which also minimizes training needs. The DSC option is also ideal for interconnects, as the units can be placed for approval independently of the rest of the solution. Intelligent Call Routing and Digit Analysis In its simplest configuration, a single Signaling Gateway with the DSC option can be used as a non-blocking switch to provide intelligent call routing based on digit analysis of the called-party number. Once sufficient digits have been received to determine the required outgoing route, the unit can use one of many different hunting algorithms to select a suitable outgoing circuit. Prior to making the call, the DSC option allows prefix digits to be added or deleted from the called- and calling-party numbers, buffering the call if necessary, until a sufficient number of dialed digits have been received or until a user-configurable timer expires. This type of usage allows for conversion from overlap signaling to enbloc signaling. Applications Interconnecting peripheral equipment such as a PB- or ISDN-based application node to an SS7 network (using DPNSS, ISDN, or QSIG). Only available on the SS7G21 platform. Interconnecting different SS7 networks, including connections among mixed ITU-T, ANSI, UK, and Japan MTP protocols Protocol conversion between different SS7 telephony user parts (TUPs), including ITU-T, ETSI, ANSI, Chinese, UK, and French variants Conversion between M2PA and MTP2, enabling low-cost, long-haul SS7 signaling traffic between circuit and packet networks Connection between SS7- and IP-based telephony systems Creation of advanced value-added services, including number translation, 800 or pre-paid, least-cost routing, grooming, and circuit-hunting 2

Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Datasheet If the subsequent switch rejects the initial outgoing call, the system can retry on a new circuit. If no circuits are available (due to congestion, for example), an alternative outgoing route can be selected (with the option of adding different prefix digits). Such a strategy is particularly useful in leastcost routing applications where, under congested conditions, calls need to be routed via alternative carriers. Intrusive Parameter Manipulation To overcome network compatibility issues and assist in the creation of advanced services, the DSC option can perform intrusive parameter manipulation. This strategy lets the user override certain protocol parameters with fixed user-selected values. Parameter manipulation is based on the original location from which a call is made, its destination, and the digits dialed. Parameters that can be manipulated include Called- and calling-party numbers Type of address System Resilience Each link set can support one or two signaling links, each of which can be terminated on separate signaling boards so that a single board failure will not result in a loss of signaling capability. Link sets can also be used in pairs as a combined link set, supporting load sharing across the combined link set. Alternatively, two link sets can be used as a preferred and a secondary link set to reach a destination. Internally, the signaling extracted from any T-1 or E-1 interface port can be routed to any signaling processor board. This strategy allows the unit to be reconfigured in the event of a signaling board failure, so that a spare signaling resource can be brought into use without a site visit to gain entry to the unit. In the dual configuration, two units can be configured to act as a single point code where a link set is spread across the two units. This allows one unit to be taken down for planned maintenance without losing any signaling routes. It is also possible to have a fully configured hot standby unit, which can be used in case the primary unit fails. This strategy is useful when a loss of signaling capacity is unacceptable if a failure occurs. Numbering plan Echo-canceller indicators Clearing causes Calling-party categories ISDN service-level indicators Scalability The modular design of the SS7G21 and SS7G22 lets a single chassis scale from 2 to 12 T-1 or E-1 ports. The SS7G21 can handle up to 24 access side signaling links or 12 SS7 signaling links, while the SS7G22 can handle signaling for up to 128 SS7 signaling links. Two chassis can work as a pair to implement a single SS7 signaling point distributed over separate hardware platforms, providing even greater signaling capacity from a single point. 3

Datasheet Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Modes of Operation The Signaling Gateways with the DSC option support two fundamentally different modes of operation: signaling-and-voice mode and signaling-only mode. In signaling-and-voice mode (see Figure 1), all traffic channels pass through the unit in addition to the signaling channels, providing the ability to support digit analysis, circuit selection, re-routing, and dynamic call switching. Each T-1/E-1 contains voice; the first two also contain SS7 Each T-1/E-1 contains voice and signaling (ISDN, QSIG, DPNSS) PB SS7 Switch SS7G21 and SS7G22 with DSC License PB PB Voice Signaling PB Figure 1. Signaling-and-Voice Mode In signaling-only mode, signaling channels pass through the unit, letting a system with DSC support a very high signaling conversion density. Because speech paths pass externally and directly between the switches on either side of the system, fewer T-1/E-1 terminations are required (see Figure 2). 4

Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Datasheet PB Signaling PB SS7G21 and SS7G22 with DSC License SS7 SS7 Switch PB PB Voice Signaling Single T-1/E-1 containing signaling only PB PBs connected directly to SS7 switch Figure 2. Signaling-Only Mode In the case of SS7-to-ISDN protocol conversion, the systems can convert signaling from multiple ISDN signaling links into SS7 signaling on a pair of signaling links. For SS7-to-SS7 protocol conversion, where only a pair of signaling links is required on each side of the converter, the unit can support up to a maximum of 16,384 circuits with just two signaling boards. Configuration and Maintenance Configuration of the SS7G21 and SS7G22 units with DSC can be performed locally (using a local terminal port) or remotely (over a LAN/WAN using TCP/IP [Telnet]). Configuration parameters can be modified dynamically without impacting ongoing normal operation in other parts of the unit, and once entered, new parameters take effect immediately. A unit does not have to be restarted in order for new parameters to take effect. All configuration data is stored internally in non-volatile, solid-state memory. Following a power outage, the unit automatically restarts and resumes full operation using the current configuration parameters when power is restored. For security, access to system configuration may be restricted by password. For greater security, Telnet and FTP access to the system may optionally be configured to operate only over secure shell (SSH). Alarms A rich set of status commands lets users interrogate the current operating state of all internal modules on the SS7G21 and SS7G22 with the DSC option. An internal alarm log, which can be viewed from any management interface, maintains a history of occurrences and the clearing of all recent alarm conditions. All alarm events have a fault title and are assigned to one of four classes: critical, major, minor, and disabled. The user can freely configure the class of each alarm event to cause it to activate one of three alarm relays (designated critical, major, and minor). Each relay is activated by the appropriate type of alarm (for example, critical alarms cause the critical relay to be activated and so on). Disabled alarms are not logged in the alarm log. The Signaling Gateway also offers SNMP support reporting a summary of the alarms to a SNMP manager. 5

Datasheet Intel NetStructure SS7G21 and SS7G22 Signaling Gateways All alarm events can optionally be reported over TCP/IP to a remote management center as they occur by enabling the Remote Data Center (RDC) option. Remote Data Center The RDC lets several types of management data transfer automatically to one or more computers at remote locations. Call data records, call failure records, and alarm events are all transferred as they happen, while traffic measurements are generated periodically at user-configurable intervals. Traffic measurements provide statistics, allowing close and accurate monitoring of circuit utilization, route utilization, traffic volume, and quality of service (QoS). All data transferred to the RDC is in CSV format text files, so the data can be imported easily into spreadsheet or database applications for post processing. This capability also permits uploading of information onto the unit from a remote site. Software updates can be performed remotely without the need for site visits. The Signaling Gateway also lets users backup configurations or current software to a remote site prior to change. Users can subsequently revert to this software or configuration by uploading from the RDC at a later date. The Signaling Gateway itself can be configured to act as an RDC to permit the local storage of RDC data (measurements, alarms, etc.) in the event of loss of IP communication with a primary RDC. Configuration Examples The SS7G21 and SS7G22 with DSC can be used in a wide variety of applications and configurations. The most common are illustrated and discussed here. They include Point of interconnect to an SS7 network Protocol conversion between different SS7 variants Connecting ISDN peripherals to an SS7 network Provision of sub-equipped ISDN PRI circuits When used as a point of interconnect to an SS7 network (see Figure 3), the DSC-enabled platform provides SS7 connectivity, satisfying the compatibility demands of the PSTN and 24 7 reliability requirements, while eliminating the need to buy an expensive switch. SS7 Network SS7G21 and SS7G22 with DSC License Customer Equipment (Does Not Require Approval) Figure 3. Point of Interconnect to an SS7 Network With the DSC functionality, the SS7G21 and SS7G22 let networks interconnect using different SS7 variants simultaneously, including ITU-T, ETSI, ANSI, as well as specific national variants for Japan and the UK (see Figure 4). Voice circuits can be connected either through the unit or directly from one network to the other, making for a very cost-effective solution. ANSI SS7 Voice SS7 Voice SS7G21 and SS7G22 with DSC License Voice SS7 ITU-T SS7 Figure 4. Protocol Conversion between Different SS7 Variants Another supported configuration (see Figure 5) is the ability to enable SS7 connectivity to ISDN peripherals such as Internet gateways and IP telephony platforms for applications such as unified messaging is another supported configuration. Connecting PB systems to an SS7 network Expanding the number of networks to which an SS7 switch can connect 6

Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Datasheet VoIP Network VoIP Gateway Fax SS7 Network SS7 SS7G21 and SS7G22 with DSC License Unified Messaging PB VoIP Gateway Email The Internet Figure 5. Connection of ISDN Peripherals to an SS7 Network The DSC option can pass or reject calls based on calling line identity, letting the user implement services where screening is required. This strategy requires provisioning sub-equipped ISDN PRI circuits for routing (see Figure 6). Such a grooming facility allows maximum resource usage on the SS7 side, which can result in reduced costs. Voice Mail System 10 Trunks SS7 Network Sample E-1 SS7G21 and SS7G22 with DSC License 15 Trunks 5 Trunks PB Data System Figure 6. Provision of Sub-Equipped ISDN PRI Circuits 7

Datasheet Intel NetStructure SS7G21 and SS7G22 Signaling Gateways PB Q.931 SS7 Network Sample E-1 SS7G21 and SS7G22 with DSC License QSIG DPNSS PB PB Figure 7. Connecting PB Systems to an SS7 Network It also allows SS7 network connectivity to a variety of PBs using appropriate access protocols such as DPNSS, QSIG or Q.931 (see Figure 7). The DSC option can greatly expand the number of adjacent switches and SS7 variants to which an existing switch can connect (see Figure 8). This allows for wider and more cost-effective deployment of existing equipment. SS7 Network 1 Your Switch SS7G21 and SS7G22 with DSC License SS7 Network 2 SS7 Network 3 Figure 8. Expanding the Number of Networks to Which an SS7 Switch Can Connect 8

Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Datasheet Technical Specifications SS7 Signaling Capabilities of the SS7G21 and SS7G22 with DSC Option Connects directly to a maximum of 64 adjacent switches Connects indirectly (via signaling transfer points [STPs]) to a maximum of 512 switches Supports combined link sets Allows simultaneous use of ANSI, ITU-T, and Japan message transfer parts (MTP) Enables fully flexible mixing between 14-, 16-, and 24-bit point code sizes Allows multiple local point codes (up to 4) Supports configurable data rate (48 kb/s, 56 kb/s, or 64 kb/s) and error correction mode (basic or PCR) Supports ISUP variants simultaneously (ITU, ANSI, Japan, etc.) System Specification Maximum capacity is dependent on the number of signaling boards installed. The figures listed here are for a single unit. Use of the SS7G21 and SS7G22 with the DSC option in dual pairs or in clusters will proportionally increase the capacity of the overall system while still acting as a single SS7 point code or deliver a highly resilient platform which supports multiple networks or point codes. Capacity SS7G21 SS7G22 Signaling boards per chassis Up to 3 Up to 3 Physical ports per unit T-1/E-1 Up to 12 Up to 12 V.11 (V.35 compatible) Up to 6 0 SS7 links per unit (including M2PA) Up to 12 Up to 128 SS7 linksets per unit Up to 48 Up to 64 Number of SS7 routes 512 512 Number of networks 4 4 10/100/1000 Mbit/sec Ethernet interfaces 4 4 ISDN signaling links Up to 24 0 (n/a) DPNSS signaling links Up to 24 0 (n/a) Maximum number of bearer channels 16,384 16,384 Reliability/Warranty MTBF prediction for Bellcore* Method @ 40 C (1 signaling board and single psu configuration) 55,700 hours 49,000 hours Warranty Intel Telecom Products Warranty Information at http://www.intel.com/network/csp/products/3144web.htm Declaration of Conformity See http://developer.intel.com/design/litcentr/ce_docs/index.htm Country-specific Approvals See the Global Product Approvals list at http://resource.intel.com/globalapproval/globalapproval.asp 9

Datasheet Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Technical Specifications (cont.) Interfaces (SS7G21 and SS7G22) LAN interface 4 10/100/1000 MB/s Ethernet Line interface: PCM Up to 12 interfaces, each software configurable as either T-1 or E-1 Pulse mask T-1: TIA-968-A, CS-03, and AT&T* TR62411 E-1: ITU-T G.703 Data rate T-1: 1544 kbits/s ± 50 ppm E-1: 2048 kbits/s ± 50 ppm Frame format T-1: D4, ESF, and ESF-CRC6 E-1: E1 and E1-CRC4 Line codes HDB3 AMI (ZCS) AMI B8ZS Connector type RJ-45 Line interface: Serial Up to six interfaces (SS7G21 only) Electrical V.11 (V.35 compatible) Connector type D-type (26-pin high density) Power DC-powered products Supply voltage (range nominal) Input power (fully equipped) Range limits AC-powered products Supply voltage (auto ranging) Input power (fully equipped) Frequency 48 VDC to 60 VDC 200 W 38 VDC to 75 VDC 100 VAC to 127 VAC / 200 VAC to 240 VAC 230 W 50 Hz to 60 Hz Physical Dimensions Height Width Depth Weight - fully equipped 3.45 in. (8.763 cm) 17.11 in. (43.46 cm) 20 in. (50.8 cm) 40.5 lbs (18.5 kg) Environmental Operating temperature Storage temperature +5 C to +40 C 40 C to +70 C Approvals Safety International CB Certificate to IEC 60950-1, EN60950-1 United States UL 60950-1 Canada CAN/CSA-C22.2 No 60950-1 EMC International EN 300 386, EN55022, EN 55024, CISPR 22 United States FCC Part 15 Class A Canada ICES-003 Telecommunications International TBR12, TBR13 United States TIA-968-A Canada CS-03 10

Intel NetStructure SS7G21 and SS7G22 Signaling Gateways Datasheet Ordering Information The SS7G21 is fitted with Intel NetStructure SPCI4 or SPCI2S SS7 Boards with a system maximum of 12 SS7 links and provides a form, fit, and function replacement for the Intel NetStructure SG430 SS7 Signaling Gateway on a higher performance platform. An SS7G21 may be purchased with either 1, 2, or 3 SPCI2S boards (4 SS7 links, 2 T-1/E-1 interfaces, two V.11 serial ports per board) 1, 2, or 3 SPCI4 boards (4 SS7 links, 4 T-1/E-1 interfaces per board) The SS7G22 is fitted with Intel NetStructure SS7HDP boards and offers significantly greater performance and link density than the SS7G21. An SS7G22 may be purchased with 1, 2, or 3 SS7HDP boards (64 SS7 links, 4 T-1/E-1 interfaces per board) with a system maximum of 128 SS7 links. Both the SS7G21 and SS7G22 use the same 2U carrier-grade chassis and operate with the same software. For each one, many variants are available offering different numbers of signaling boards and power supply types (AC or DC). Differences include The type of SS7 signaling boards installed in the unit The number of T-1/E-1 ports provided The number of signaling links that can be processed (from 4 to 128) The processing performance Optional redundant power supply units may be ordered separately. When ordering the SS7G21 or SS7G22, there is no need to order individual signaling boards, as the product is delivered with the boards already installed. According to the requirement, the correct Product ID (item market name) can be ordered to identify a unit with 1, 2, or 3 boards of any variant, and power supply type. Product Line Overview Table Product (Item Market Name) SS7SBG20DSC SS7G22AH1 or SS7G22AH2 or SS7G22AH3 SS7G22DH1 or SS7G22DH2 or SS7G22DH3 SS7G21AQ1 or SS7G21AQ2 or SS7G21AQ3 SS7G21DQ1 or SS7G21DQ2 or SS7G21DQ3 SS7G21AD1 or SS7G21AD2 or SS7G21AD3 SS7G21DD1 or SS7G21DD2 or SS7G21DD3 Description DSC software license SS7G22 AC system with 1, 2, or 3 SS7HDP boards SS7G22 DC system with 1, 2, or 3 SS7HDP boards SS7G21 AC system with 1, 2, or 3 SPCI4 boards SS7G21 DC system with 1, 2, or 3 SPCI4 boards SS7G21 AC system with 1, 2, or 3 SPCI2S boards SS7G21 DC system with 1, 2, or 3 SPCI2S boards Optional SS7SBG20M2PA TLPACPSU002 TLPDCPSU002 TMLPMOUNT51 TMLPMOUNT52 M2PA software license Redundant AC power supply module for SS7G21A or SS7G22A Redundant DC power supply module for SS7G21D or SS7G22D 2/4-post 19 (48.26 cm) rack mount 2/4-post 23 (58.42 cm) rack mount 11

To learn more, visit us at http://www.intel.com. 1515 Route Ten Parsippany, NJ 07054 Phone: 1-973-993-3000 INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. ECEPT AS PROVIDED IN INTEL S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications. Intel may make changes to specifications, product descriptions, and plans at any time, without notice. Intel, Intel NetStructure, and the Intel logo are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. *Other names and brands may be claimed as the property of others. Printed in the USA Copyright 2005 Intel Corporation All rights reserved. C Printed on recycled paper. 08/05 00-9687-001