ITP Data Sheet Jan03

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Data Sheet

Cisco IP Transfer Point

The Cisco IP Transfer Point (ITP) is a

comprehensive product for transporting

Signaling System 7 (SS7) traffic over

traditional time-division multiplexing

(TDM) networks or advanced SS7-over-IP

(SS7oIP) networks. Because the Cisco IP

Transfer Point supports traditional,

advanced, and combined traditional/

advanced networks, operators can control

their migration to advanced networks and

ensure the migration is aligned with

business needs and goals.

The Cisco ITP offers the complete feature

set found in traditional signaling transfer

points (STPs). When operating in a TDM

mode, the Cisco ITP provides superior

value for transporting SS7 traffic over

traditional TDM networks.

Using the standards developed by the

Internet Engineering Task Force (IETF)

Signaling Transport (Sigtran) working

group, in an SS7oIP mode the Cisco ITP

connects to traditional SS7 nodes or

IP-enabled signaling nodes and offloads the

SS7 traffic to reliable and cost-efficient IP

networks. The Cisco ITP is also capable of

operating in a mode that mixes TDM and

SS7oIP.

Additionally, by incorporating the Sigtran

working group's MTP3 User Adaptation

Layer (M3UA) and Signaling Connection

Control Part User Adaptation Layer (SUA)

standards, the Cisco ITP provides complete

signaling gateway functions between

traditional TDM networks and IP-enabled

signaling endpoints. The Cisco ITP

products provide superior value over

traditional SS7 transport solutions while

providing the foundation infrastructure for

the next-generation of signaling transport.

Important features and benefits of the Cisco

ITP include:

• Signaling infrastructure cost reduction

• Superior value and flexible scalability

for signaling capacity expansion (TDM

or IP)

• Integrated, leading IP routing features,

including IP WAN media support and

quality-of-service (QoS)

• Reliability and performance

characteristics demanded by signaling

infrastructures

• High Speed Link (HSL) support

• Traditional STP feature set, including

global title translation (GTT) and

gateway screening

• Open industry standards: M2PA,

M3UA, and SUA

• IP investment protection

• Portfolio of industry-leading traditional

SS7 and SS7oIP solution partners


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• Mobile Application Part gateway (MAP GW) services for wireless LAN (WLAN) Subscriber Identity Module

(SIM) authentication and authorization

• MAP GW services for multilayer routing

Protocol Specifications and Compliance

Figure 1 shows the basic protocol architecture of a Cisco IP Transfer Point and that any-to-any switching can be

achieved.

Figure 1: Cisco IP Transfer Point Architecture

• AAL5-ATM Adaptation Layer 5

• GTT-Global Title Translation

• MAP-Mobile Application Part

• MTP-Message Transfer Part

• MTP1-Message Transfer Part Layer 1

• MTP2-Message Transfer Part Layer 2

• MTP3/MTP3b-Message Transfer Part Layer 3 or Layer 3b

• M2PA-MTP2-User Peer-to-Peer Adaptation Layer

• M3UA-MTP3 User Adaptation Layer

• SCCP-Signaling Connection Control Part

• SCCOP-Service-Specific Convergence Protocol

• SCTP-Stream Control Transmission Protocol

• SSCF-NNI-Service-Specific Coordination Function for Network Node Interface

• SUA-SCCP User Adaptation Layer

• TCAP-Transaction Capabilities Application Part

Tables 1 through 9 provide more information about the Cisco ITP. Specifically:

• Table 1 describes protocol compliance.

• Table 2 outlines the general platform specifications.

SCTP

IPMTP1

MTP2M2PA

M3UASUA

AAL5

SCCOP

SSCF-NNI

MTP3/MTP3b

SCCP

TCAP

MAP Gateway

GTT


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• Table 3 describes SS7 interface support.

• Table 4 details the Cisco ITP capacity and performance.

• Table 5 describes Cisco ITP software features.

• Table 6 lists the IP routing protocols supported.

• Table 7 describes Cisco IOS® Software QoS features.

• Table 8 identifies other Cisco IOS Software features.

Platform Specifications

The Cisco IP Transfer Point is implemented on the Cisco 2600 Series Router (2650, 2650XM, 2651, 2651XM), the

Cisco 7200 Series Router (7204VXR, 7206VXR), and the Cisco 7500 Series Router (7507, 7513). All hardware

models function similarly by performing MTP3 and SCCP routing over SS7 TDM links or over an IP (or dual IP)

network cloud.

Note: RAM and Flash memory requirements are determined by operational requirements for maximum capacity.

Cisco IOS Software images, routing tables, global title tables, and run-time data structures consume memory.

Table 1 Protocol Compliance

Protocol Specifications

MTP (1,2,3) ITU1-T1 Q.701-Q.709 White 1996 (interworks with Blue), ANSI2 T1.111-1996, China SS7

1. International Telecommunications Union - Telecommunication Standardization Sector2. American National Standards Institute

SCCP ITU-T Q.711-Q.719 White 1996 (interworks with Blue), ANSI T1.112-1996

High-speed links (ATM over non-channelized T1 or E1)

Q.2140, Q.2110, Q.2210, Q.2144

GR-2878, I.363, I.361

M2PA IETF Sigtran SS7 MTP2-User Peer-to-Peer Adaptation Layer Draft Standard, March 2, 2001

M3UA IETF RFC 3332: Sigtran SS7 MTP3-User Adaptation Layer

SUA IETF Sigtran SS7 SCCP-User Adaptation Layer Draft Version 14

SCTP IETF RFC 2960: Stream Control Transmission Protocol


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Table 2 General Platform Specifications

AttributeCisco 2650 and 2651

Cisco 7204VXR and 7206VXR Cisco 7507 Cisco 7513

Dimensions H: 1.69 in. (4.3 cm)

W: 17.5 in. (44.5 cm)

D: 11.8 in.

(30 cm)

H: 5.25 in. (13.34 cm)

W: 16.8 in. (42.67 cm)

D: 17 in.

(43.18 cm)

H: 19.25 in.

(48.9 cm)

W: 17.5 in.

(44.45 cm)

D: 25.1 in.

(63.75 cm)

H: 33.75 in.

(85.73 cm)

W: 17.5 in.

(44.45 cm)

D: 22 in.

(55.88 cm)

Dual processor No No Yes Yes

Dual power Yes/External Yes Yes Yes

Network Equipment Building Standards (NEBS) 3

Yes Yes Yes Yes

Hot-swap interface cards

No Yes Yes; versatile interface processor (VIP)

Yes/VIP

Main processor requirements

Cisco 7200 Series NPE 400 Network Processing Engine

Route Switch Processor 8 or 16

Route Switch Processor 8 or 16

Main processor RAM (minimum/recommended)

64 MB

128 MB

128 MB

256 MB

128 MB

256 MB

128 MB

256 MB

Main processor Flash Memory

32 MB 128 MB

Flash disk

128 MB

Flash disk

128 MB

Flash disk

Cisco Versatile Interface Processor (VIP) requirements

VIP4-80 or VIP6-80 VIP4-80 or VIP6-80

VIP SDRAM

(minimum/recommended)

128 MB

256 MB

128 MB

256 MB

Table 3 SS7 Interface Support by Platform

Interface Type Cisco 2650/2651 Cisco 7204/7206 Cisco 7507/7513

V.35 WIC1-1T, WIC-2T PA2-8T-V35,

PA-4T+

EIA3/TIA-449 WIC-1T, WIC-2T PA-4T+

EIA/TIA-530 WIC-1T, WIC-2T


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T1 Compliance

• ANSI T1.403

• United States (UL 1950, 1459, T1)

• Federal Communications Commission (FCC) Part 68

• Canada (C1950, T1)

• Unites States (FCC part 15J Class A, T1)

• United Kingdom (BS6301, EN60950, EN41003)

• Canada (CSA C108.8 Class A, T1)

• Bellcore-AT&T Accunet (62411)

• ATT 54016

• Japan (VCCI Class 2, T1)

E1 Compliance

• Germany (TUV GS)

• Germany (VDE 0878 part 3 and 30)

• France (NFC98020)

• France (EN60950, EN41003)

• Sweden (SS447-2-22)

• Europe (EN55022 Class B, EN55102-1, EN55102-2)

• CCITT/ITU G.703, G.704, I.431

• ETSI NET5, ETS300156

• CTR-4, CTR-12

• TBR-13

• ETS 300011

• ITU I.431

Channeled T1/DS0 VWIC4-1MFT-T1

VWIC-2MFT-T1

VWIC-2MFT-T1-DI

PA-MCX-8TE1-M PA-MCX-8TE1-M

Channeled E1 VWIC-1MFT-E1

VWIC-2MFT-E1

VWIC-2MFT-E1-DI

PA-MCX-8TE1-M

CAB5-ADPT-75-120 for 75 ohms

PA-MCX-8TE1-M

5CAB-ADPT-75-120 for 75 ohms

High-speed links (ATM) over T1/E1

PA-A3-8T1IMA

PA-A3-8E1IMA

1. WAN interface card2. Port adapter3. Electrical Interface Assembly/Telecommunications Industry Alliance4. Voice WAN interface card5. Cisco product that must be purchased if an operator wants to convert the 120-ohm interface on the PA-MCX-8TE1-M to a 75-ohm coaxial cable.

Table 3 SS7 Interface Support by Platform (Continued)

Interface Type Cisco 2650/2651 Cisco 7204/7206 Cisco 7507/7513


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IP Media Support

• T1, T3

• E1, E3

• Ethernet, Fast Ethernet, Gigabit Ethernet

• ATM over T3, E3, OC-3 single mode, OC-3 multimode

• Frame Relay, Switched Multimegabit Data Service (SMDS), X.25

• ISDN Primary Rate Interface (PRI)

• High-Speed Serial Interface (HSSI)

• V.35

• Fiber Distributed Data Interface (FDDI)

• Packet over SONET-OC-3, OC-12

Capacity and performance notes:

• Cisco 7507 and 7013 routers configured with RSP16 and VIP6-80

• Individual links are capable of running at 1.0 Erlang

• Testing performed with 120-byte average Message Signal Unit (MSU) size

• Testing performed with 64-kbps links

• SS7-TDM link to SCTP link numbers assume TDM and SCTP links carry equal load.

• For capacity planning, the incoming rate of MSUs cannot exceed the VIP line card or the central processor's MSU/

second capacity limits.

Table 4 Capacity and Performance by Platform

Maximum Cisco 2650/2651 Cisco 7204/7206 Cisco 7507 Cisco 7513

Maximum low-speed TDM links

4 24 240 720

Maximum concurrent low-speed TDM and M2PA links

4/100 24 TDM

1000 M2PA

240 TDM

1000 M2PA

420 TDM

1000 M2PA

Maximum high-speed links

34 34

Maximum low-speed links per VIP

80 80

Maximum high-speed links per VIP

8 8

Maximum MSUs per second per VIP

6000 6000

Maximum MTP3 MSUs per second

2500 6000 30,000 30,000


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Cisco IP Transfer Point Features

Maximum M3UA MSUs per second

1200 6000 15,000 15,000

Maximum SUA MSUs per second

900 3000 10,000 10,000

Maximum MAP GW SIM authentication transactions per second

1800 1800 1800

Maximum MAP GW SIM authentication plus authorization transactions per second

360 360 360

Latency (MTP3 and GTT routed MSUs)

3-7 ms 3-8 ms 5-8 ms 5-8 ms

Maximum entries in routing table

10,000 10,000 10,000 10,000

Maximum entries in GTT table

150,000 500,000 500,000 500,000

Maximum M3UA/SUA routing keys

10,000 10,000 10,000 10,000

Table 5 Cisco IP Transfer Point SS7oIP Features

Category Cisco IP Transfer Point Capability

SS7 routing SCCP/GTT/MTP3 any-to-any routing between all link types

Quality of Service (QoS) QoS per SCTP association with classification based on:

Service indicator

Point code

Input link set

Global title address

Access lists

M3UA/SUA routing key

GTT Support Full traditional SCCP and GTT support

address translation.

Table 4 Capacity and Performance by Platform (Continued)

Maximum Cisco 2650/2651 Cisco 7204/7206 Cisco 7507 Cisco 7513


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Gateway screening Full traditional STP screening capability; this specifically includes MTP3 and SCCP layer screening using access lists for any combination of the following MSU parameters:

MTP3 Screening

• Origination point code

• Destination point code

• Service indicator

SCCP Screening

• Called Party

– Global title indicator

– Translation type

– Numbering plan

– Nature of address indicator

– Encoding scheme

– Point code

– Subsystem number

• Calling party

– Point code

– Subsystem number

• SCCP Management Screening

– Affected point code

– Affected subsystem number

General Screening

• Byte-pattern and offset

SS7 load sharing Complete MTP3 and SCCP load sharing for links, link sets, combined link sets for any link types.

Multiple point codes Primary, secondary, and capability point codes and M3UA/SUA routing keys:

Up to 32 TDM links to adjacent nodes

Network management and monitoring Simple Network Management Protocol (SNMP)-based network management for nodes, links, and routes (using a graphical user interface); interoperates with CiscoWorks, CiscoView, HP OpenView products.

MAP Gateway SIM authentication and authorization

SIM-based authentication and authorization using RADIUS Vendor Specific Attributes (VSA) interface.

MAP Gateway SMS routing Advanced routing capabilities based on parameters such as SMS A-address, B-address, destination SMSC and origination MSC.

Table 5 Cisco IP Transfer Point SS7oIP Features (Continued)

Category Cisco IP Transfer Point Capability


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Table 6 IP Routing Protocol

Protocol Definition

BGP Border Gateway Protocol

EGP Exterior Gateway Protocol

EIGRP Enhanced Interior Gateway Routing Protocol

HSRP Hot Standby Routing Protocol

IGMP, MBGP, MSDP, PIM, V1-2, DVMRP

Mutlicast Routing Protocol

IGRP Interior Gateway Routing Protocol

NHRP Next Hop Resolution Protocol

OSPF Open Shortest Path First

RIP Routing Information Protocol

Static Routing Provision Static Routes

Table 7 Standard Cisco IOS Software Quality-of-Service Features

QoS Feature Description

BACP Bandwidth Allocation Control Protocol

Class-based queueing Class-based Ethernet class-of-service (CoS) matching and marking

Class-based policer for Diff-Serv Assured Forwarding per hop behavior

Class-based Weighted Fair Queuing

Class-based marking

Class-based shaping

CAR Committed access rate

Diff-Serv Differentiated Services (Diff-Serv)-compliant Weighted Random Early Detection (WRED)

Flow-based WRED Flow-based WRED

Generic Traffic Shaping Generic Traffic Shaping

LLQ Low Latency Queueing

PBR Policy-Based Routing

RED/WRED Random Early Detection/Weighted RED

SPD Selective Packet Discard

SBM Subnet Bandwidth Manager


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Table 8 Other Cisco IOS Software Features in the Cisco ITP

Feature Description

AAA Authentication, authorization, and accounting

Access lists Access lists

Time-based access lists

Reflexive access lists

Cisco Discovery Protocol Cisco Discovery Protocol

Dynamic Host Configuration Protocol (DHCP)

DHCP Client, DHCP Proxy Client, DHCP Server-Easy IP Phase 2

Dial-on-demand Dial-on-demand ISDN

IP routing IP Enhanced IGRP route authentication

IP multicast load splitting across equal-cost paths

IP named access control list

IP to ATM CoS

IP multicast

IPv6 (2002)

Cisco Express Forwarding

NAT Network Address Translation

NTP Network Time Protocol

RADIUS Remote Authentication Dial-In Service

SAA Service Assurance Agent

SNMP SNMP, SNMP Version 3, SNMPv2C

TACACS Terminal Access Controller Access Control System, TACACS SENDAUTH function, TACACS Single Connection

WCCP Web Cache Communication Protocol redirection on inbound interfaces, WCCP Version 2


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System Availability Metrics

The Cisco 7500 Series is the platform of choice for maximum system

availability of the Cisco IP Transfer Point. The Cisco 7500 Series

offers full redundancy at all system levels and is widely deployed in

industry segments that require high reliability and availability:

telecommunications, health care, banking, brokerage, aviation, and

military installations.

Cisco Customer Advocacy monitors mean time between failure

(MTBF) and mean time to repair (MTTR) for Cisco 7500 Series

hardware and software in large service provider networks. From

customer results, single Cisco IP Transfer Point availability can

achieve “six nines” or 99.9999 percent availability with a calculated

downtime of about one second per year. Mated pair Cisco IP

Transfer Point availability far exceeds “six nines” or 99.9999

percent availability.

For More Information

For more information on Cisco's mobile wireless products and

solutions, go to www.cisco.com/go/mobile

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