Service Resource Module

Bulk Distribution for T1 Service

The MGX-SRM-3T3/B supports a de-mulitplexing function called bulk distribution. With bulk distribution, the MGX-SRM-3T3/B converts traffic from its T3 lines to T1 channels and sends the data streams across the distribution bus to the appropriate service modules. The benefit of this feature is that the number of T1 cables and back cards is greatly reduced. Applicable service modules are the MGX-AUSM/B-8T1, AX-FRSM-8T1, and MGX-CESM-8T1.

At its MGX-BNC-3T3-M back card, the MGX-SRM-3T3/B connects to an external multiplexer. The multiplexer connects to the T1 lines from user-equipment and places the data streams on T3 lines to the MGX-SRM-3T3/B. Each T3 line can contain 28 T1 channels. An individual MGX-SRM-3T3/B can support 10 card slots, so the maximum number of T1 channels it can process is 80.

Linking the MGX-SRM-3T3/B to a destination card causes the switch to take CPE traffic through the MGX-SRM-3T3/B rather than the T1 card’s line module. Linkage is a card-level condition. If you link just one T1 channel on a service module to the MGX-SRM-3T3/B, the back card on the service module becomes inoperative, so you must link all other T1 ports on that service module to the MGX-SRM-3T3/B if you want them to operate. Linking T1 ports into a group does not form an N X T1 channel. Each T1 channel remains a distinct T1 channel. Furthermore, a group belongs to one slot, so it cannot include T1 channels belonging to another card.

For a description of how the MGX-SRM-3T3/B supports redundancy for linked channels, see the section “Redundancy Support by the MGX-SRM-3T3/B”in this chapter.

Before configuring bulk distribution on an SRM, perform the following tasks:

1Activate the lines (addln on the CLI).

2Optionally configure the lines (cnfln on the CLI).

3Display the state of the lines (dspln and dsplns on the CLI).

To link T1 ports on a service module to a T3 line on an MGX-SRM-3T3/B:

•Execute addlink on the active PXM. Related commands are dsplink and dellink. addlink <T3 line number> <T1 slot> <NumberOfT1s> <TargetSlotLineNum>

T3 line number is the line number in the format slot.line, where slot is 15 or 31 (regardless of whether redundant SRMs exist in slots 16 and 32), and the range for line is 1–3.

T1 slot

is the start T1 line number within the T3 line (range 1–28).

NumberOfT1s is the slot number of the T1 service module. Target Slot number can be 1-6, 11-14, 17-22, or 27-30.

TargetSlotLineNum is the T1 line number in the linked card slot. The range is 1–8.

Redundancy Support by the MGX-SRM-3T3/B

The MGX-SRM-3T3/B can provide redundancy to service modules with T1 or E1 lines. For E1 or T1 modules, it can provide redundancy through the redundancy bus. For T1 modules only, it can provide redundancy through the distribution bus. The redundancy and distribution buses impose different requirements, but the common requirement is that all primary and secondary cards supported by a particular MGX-SRM-3T3/B must reside on the same level of the card cage as that SRM.

6-48Cisco MGX 8850 Installation and Configuration, Release 1.1.00, Part Number 78-6186-02

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Cisco Systems MGX-FRSM-2CT3, MGX-FRSM-HS2 manual Bulk Distribution for T1 Service, Redundancy Support by the MGX-SRM-3T3/B
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MGX-FRSM-HS2, MGX-FRSM-2T3E3, MGX-FRSM-2CT3 specifications

Cisco Systems is a leader in networking technology and infrastructure, providing solutions that drive innovation and efficiency for businesses worldwide. Among its diverse range of products, the MGX series stands out as a pivotal component for the network-centric era, especially with models like MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2. These modules are primarily designed for the MGX 8800 series routers, facilitating efficient traffic management and service delivery.

The MGX-FRSM-2CT3 is a versatile module that supports two T3 connections. It allows network operators to seamlessly integrate high-capacity circuit-switched and packet-switched data on a unified platform. This versatility is crucial for service providers looking to enhance their bandwidth offerings while ensuring reliable performance across voice, video, and data applications.

In contrast, the MGX-FRSM-2T3E3 module caters to operators needing E3 support. This feature allows for efficient data transport over a broader bandwidth, catering to European standards. The E3 configuration is vital for service providers operating in Europe or regions that utilize E3 technology prominently.

The MGX-FRSM-HS2 module is another significant offering, designed to accommodate the increasing demand for high speed and high capacity. It supports higher-order TDM and packet technologies, enabling operators to implement advanced services such as VoIP, video conferencing, and other data-intensive applications. This module provides scalability and reliability, making it ideal for next-generation networks.

All three modules leverage Cisco’s advanced switching and routing technology, ensuring optimal performance and minimal latency. The integration of Quality of Service (QoS) features allows network administrators to prioritize traffic types effectively, ensuring mission-critical applications receive the necessary bandwidth.

Additionally, these MGX modules support various signaling protocols, enabling interoperability with existing network infrastructure while also facilitating the migration to newer technologies. They play an essential role in modernizing telecom networks, allowing service providers to adapt to changing market demands and technology landscapes.

In summary, the Cisco MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2 modules are key components for businesses looking to enhance their networking capabilities. With their robust support for T3 and E3 technologies, high scalability, and advanced QoS features, these modules empower service providers to deliver a wide range of services, drive innovation, and meet the growing demands of users in an increasingly connected world.
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