Cisco Systems MGX-FRSM-2CT3 manual Circuit Emulation Service Module for T3 and E3, Features

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Circuit Emulation Service Module for T3 and E3

Circuit Emulation Service Module for T3 and E3

The main function of the Circuit Emulation Service Module (CESM) is to provide a constant bit rate (CBR) service. The CESM converts data streams into CBR AAL1 cells according to the CES-IS specifications of the ATM Forum for unstructured transport across an ATM network. Unstructured transport means the CESM does not interpret or modify framing bits, so a high-speed CESM creates a single data pipe The most common application is legacy support for digitized voice from a PBX or video from a codec. Using circuit emulation, a company can expand its data communication network without specific voice or video cards to meet its voice or teleconferencing requirements.

The higher speed CESM uses a T3 or E3 line. The card set consists of an MGX-CESM-T3 or MGX-CESM-E3 front card and either a BNC-2T3 or BNC-2E3 back card. In this CESM application, only one line on the two-port back card is operational. Furthermore, it supports one logical port and one logical connection (as a data pipe) on the line and runs at the full T3 or E3 rate. Although the typical connection setup is the three-segment connection across an ATM network, the CESM can support a DAX connection. Up to 26 CESM card sets can operate in an MGX 8850 node.

Features

The MGX-CESM-T3 or MGX-CESM-E3 provide the following:

•Unstructured data transfer at 44.736 Mbps (1189980 cells per second) for T3 or 34.368 Mbps (91405 cells per second) for E3

•Synchronous timing by either a local clock sourced on the PXM or loop timing (transmit clock derived from receive clock on the line)

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1:1 redundancy is through a Y-cable

Programmable egress buffer size (in the form of cell delay variation)

Programmable cell delay variation tolerance (CDVT)

Per VC queuing for the transmit and receive directions

An idle code suppression option

Bit count integrity when a lost AAL1 cell condition arises

Alarm state definitions per G.704

Trunk conditioning by way of framed AIS for T3 and unframed, alternating 1s and 0s for E3

On-board bit error rate testing (BERT)

Cell Delay Treatment

You can configure a tolerable variation in the cell arrival time (CDVT) for the receive buffer. After an underrun, the receiver places the contents of the first cell to arrive in a receive buffer then plays it out at least one CDVT value later. The maximum cell delay and CDVT (or jitter) are:

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For T3

—Cell delay of 4 msec

—CDVT of 1.5 msec in increments of 125 microseconds For E3

—Cell delay of 2.9 msec

—CDVT of 2 msec in increments of 125 microseconds

6-36Cisco MGX 8850 Installation and Configuration, Release 1.1.00, Part Number 78-6186-02

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Contents Tasks for Configuring Cards and Services Modifying the Resource PartitioningSequence of Configuration Tasks Rules for Adding ConnectionsRules for Adding a DAX Connection Rules for Adding Three-Segment ConnectionsRules for Adding Management Connections Processor Switching Module Configuring Card-Level Parameters, Lines, and Ports Cnfcdrscprtn numberPARconns numberPNNIconns numberTAGconnsAddport portnum linenum pctbw minvpi maxvpi Automatic Protection Switching on the PXM Cnfatmln linenum typeProcessor Switching Module Adding Connections on a PXM in a Stand-Alone Node Cnfcon connID routepriority maxcost restricttrunktype CACCnfupcubr connID polType pcr0+1 cdvt0+1 IngPcUtil CLP ATM Universal Service Module Using the CLI to Configure the Card, Lines, and PortsCnfcdrscprtn 300 300 Cnfportq portnum qnum qalgo qdepth clphigh clplow efcithresUsing the CLI to Configure Inverse Multiplexing Adding and Configuring Connections on the AUSM/BAddimagrp groupnum porttype listoflinks minNumLink Porttype Is the port type 1=UNI, 2=NN1Default is slave, so you actually do not need to type a ConnIDSlot number, port number, vci, and vpi of the slave end ATM Universal Service Module Adding and Configuring Connections on the AUSM/B BPX 8600-to-BPX 8600 Segment EpdthresholdEfcithresh Is the Efci threshold in the range 1-16000 cells Frame Service Module Features Types of Frame Service ModulesVery High Speed Frame Service Modules IntroductionFrame Service Module Features Four-Port Unchannelized Frame Service Module forMGX-FRSM-2CT3 Features MGX-FRSM-2T3E3 FeaturesMGX-FRSM-HS2/B Features MGX-FRSM-HS1/B FeaturesEight-Port Frsm Features Description of Connection Types on the Frsm Frame Relay-to-ATM Network InterworkingCongestion Indication for NIW Connections Frame Relay-to-ATM Service Interworking PVC Status ManagementCell Loss Priority Congestion Indication Command and Response Mapping Frame ForwardingATM/Frame-to-User Network Interface Translation and Transparent ModesConfiguring Frame Relay Service Configuring the Frsm Cards, Lines, and PortsCnfln linenum linetype linerate Addport portnum linenum porttype Addport portnum linenum ds0speed beginslot numslot porttypeAddport portnum porttype Cnfport portnum lmisig asyn elmi T391 T392 N391 N392 N393Configuring Frame Relay Service Adding a Frame Relay Connection Addred redPrimarySlotNum redSecondarySlotNum redTypeConfiguring Frame Relay Service Cnfchanmap channum chanType FECN/EFCI DE to CLP CLP to DE =NIWTest Commands for the FRSMs Establishing the BPX 8600-to-BPX 8600-Series SegmentBit Error Rate Testing on an Unchannelized T3 or E3 Frsm Circuit Emulation Service Module for T3 and E3 FeaturesCell Delay Treatment Configuring Service on a T3 or E3 Cesm Error and Alarm ResponseConfiguring the Card, Lines, and Ports Adding and Modifying ConnectionsAddcon portnum mastership remoteConnId Cnfcon portnum Cdvt CellLossIntegPeriod bufsizeBit Error Rate Testing on a T3 or E3 Cesm Eight-Port Circuit Emulation Service Modules Structured Data TransferUnstructured Data Transfer Cell Delay Treatment Error and Alarm ResponseRedundancy Support for the Eight-Port Cesm Configuring Service on an Eight-Port Cesm Cnfln linenum linecode linelen clksrc E1-signalingConfiguring Bulk Distribution and Redundancy Addport portnum linenum beginslot numslot porttypeAdding and Modifying Connections Eight-Port Circuit Emulation Service Modules Service Resource Module Configuring Card and Line ParametersBulk Distribution for T1 Service Redundancy Support by the MGX-SRM-3T3/BConfiguring Redundancy Through the Redundancy Bus To specify 11 redundancy. Enter a 2 to specify 1 NRedundancy . Only an SRM can support 1 N redundancy Bit Error Rate Testing Through an MGX-SRM-3T3 Configuring Redundancy Through the Distribution BusCard pair. Permissible slot numbers are in the range 11-14, 17-22,Bit Error Rate Testing Through an MGX-SRM-3T3 Pattern Test for AX-FRSM-8E1 and MGX-CESM-8E1 Pattern Test Options In-band/ESFLoopback Test Options

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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