PA-MCX-8TE1产品简介

Today's mobile operators are experiencing PA-MCX-8TE1思科原装线卡模块increasing data traffic in Signaling System 7 (SS7) networks that are designed to carry signaling traffic for call setup and teardown. This data traffic increase is due to network capacity demand from mobile number portability, audience interaction services (televoting via Short Message SPA-MCX-8TE1思科原装线卡模块ervice [SMS]), downloading ringtones to mobile handsets, and more activities by subscribers.

The Cisco IP Transfer Point (ITP) PA-MCX-8TE1思科原装线卡模块solution allows mobile operators to use a more manageable and cost-efficient IP network as transport for SS7 traffic. The Cisco ITP solution will complement or eventually replace existing SS7 networks built of signaling transfer points (STPs).

The Cisco SS7 Port Adapter (product PA-MCX-8TE1思科原装线卡模块part number PA-MCX-8TE1-M) is a fundamental part of the Cisco ITP solution, providing high-density, high-throughput connectivity to traditional SS7 devices. This port adapter is a specialized T1/E1 hPA-MCX-8TE1思科原装线卡模块ardware device that can only be used for SS7 Message Transfer Part Layer 2 (MTP2) connectivity. It is only supported in the rsp-itpv-mz Cisco IOS® Software Release 12.2 MB images. Table 1 highlights the general applicability of the Cisco SS7 Port Adapter.

PA-MCX-8TE1思科原装线卡模块

Feature Description
Physical

Singlewide port adapter with (8) T1 or E1 RJ-48c ports

Platform support

Cisco 7500 Versatile Interface Processor (VIP4-80 or VIP6-80)

Cisco 7204 VXR and 7206 VXR routers

Clock sources

Building Independent Timing Supply (BITS), line, or internally generated

BITS support  PA-MCX-8TE1思科原装线卡模块

Physical connector: The two-wire interface is connected to the RX tip and ring inputs on the RJ-48 connector. Framing must be DS1 D4 super frame (SF) BITS source when operating in T1 mode, or No-CRC4 BITS source in E1 mode. BITS input via Composite Clock is not supported. Multiple BITS input sources may be received on the port adapter, and each assigned a priority for use.

Note: Minimum Cisco IOS Software is Release 12.2(4)MB6 for BITS support.

SS7 line clocking  PA-MCX-8TE1思科原装线卡模块

Port adapter can receive the clock source from one or more SS7, T1, or E1 ports. Lines can each be assigned a priority for use.

Clock distribution

Clock distribution: Independent of the clock source, the PA can distribute the current primary clock source to all ports and links on the port adapter.  PA-MCX-8TE1思科原装线卡模块

Holdover mode: While the external reference clock source is available, the port adapter's master clock generator will store timing data relevant to the reference signal. When all external clock sources are unavailable, the port adapter enters holdover mode to maintain timing integrity with stratum three-clock accuracy for up to 24 hours.

General feature support  PA-MCX-8TE1思科原装线卡模块

Integrated channel service units/data service units (CSUs/DSUs)
Software configurable for E1/T1 mode
Software configurable for 56 or 64 kbps timeslots
Message Transfer Part Layer 2 (MTP2) Fill-In Signaling Unit (FISU)/Link Status Signal Unit (LSSU) generation and filtering
Drop and insert for non-SS7 timeslots
American National Standards Institute (ANSI), International Telecommunications Union (ITU), and China SS7 variant support
Minimum Cisco IOS Software release support

Release 12.2(4)MB3 for Versatile Interface Processor
Release 12.2(4)MB9 for Cisco 7200 VXR
Product Description  PA-MCX-8TE1思科原装线卡模块

The Cisco SS7 Port Adapter is a singlewide port adapter designed to provide a full 8-port SS7 solution for the Cisco 7500 Versatile Interface Processor (VIP) and the Cisco 7204 VXR and 7206 VXR routers. The port adapter supports a maximum of 126 signaling links that can be distributed in any combination over the available eight physical T1/E1 ports.

The MTP2 of the SS7 protocol requires constant repetition Fill-In Signaling Units (FISUs) while no data is being transmitted. The port adapter complements the software implementation of MTP2 by repeating and filtering identical FISUs in hardware, freeing CPU resources and enhancing performance and throughput.

The RJ-48c ports are software configurable to support T1 or E1 (120-ohm) interfaces. A simple cable adapter for conversion to a 75-ohm coaxial cable interface is available. In T1 mode, each port can support up to 24 SS7 links for an aggregate data rate of 1.536 Mbps per port. In E1 mode, each port can support up to 31 SS7 links per port for an aggregate data rate of 1.984 Mbps per port.

Product Applications  PA-MCX-8TE1思科原装线卡模块

The Cisco SS7 Port Adapter is ideal for telecommunications operators that want to cost-effectively aggregate traditional SS7 devices using Cisco ITPs. Table 2 highlights important features and benefits of the Cisco SS7 Port Adapter.