Eight-Port Circuit Emulation Service Modules

Eight-Port Circuit Emulation Service Modules

The main function of the Circuit Emulation Service Module (CESM) is to provide a constant bit rate (CBR) circuit emulation service by converting data streams into CBR AAL1 cells for transport across an ATM network. The CESM supports the CES-IS specifications of the ATM Forum.

The eight-port CESM lets you configure individual physical ports for structured or unstructured data transfer. The card sets consist of an MGX-CESM-8T1 or MGX-CESM-8E1 front card and one of the following back cards:

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RJ48-8T1

R-RJ48-8T1 for supporting 1:N redundancy through the optional MGX-SRM-3T3

RJ48-8E1

R-RJ48-8E1 for supporting 1:N redundancy through the optional MGX-SRM-3T3

SMB-8E1

Structured Data Transfer

If you configure an individual port for structured data transfer, the eight-port CESM supports:

•Synchronous timing.

•Superframe or Extended Superframe for T1.

•N x 64 Kbps, fractional DS1/E1 service (contiguous time slots only). You can map an N x 64-Kbps channel to any VC.

•CAS robbed bit for T1 (ABCD for ESF and SF frames) and CAS for E1 (channel 16).

•CCS channel as a transparent data channel.

•A choice of partial-fill payload sizes.

•Idle detection and suppression for 64-Kbps CAS connections.

•Loopback diagnostics on a line or a connection (addlnloop, tstcon, and tstdelay commands).

•Bit error rate test (BERT) functionality with loopback pattern generation and verification on individual lines or logical port. For a description of the BERT functions, see the section titled “Bit Error Rate Testing Through an MGX-SRM-3T3.”

Unstructured Data Transfer

If you configure an individual port for unstructured data transfer, the eight-port CESM supports:

•Synchronous or asynchronous timing at T1 (1.544 Mbps) or E1 (2.048 Mbps) rates. For asynchronous timing, you can select its basis as either SRTS and adaptive clock recovery.

•The special port type framingOnVcDisconnect. This port type prevents a remote-end CPE from going to LOF by placing a line in remote loopback mode when the CESM determines that a connection deletion or suspension occurred at the network-side ATM interface.

•Ability to detect and display a yellow alarm for the ESF framing on a T1 line.

•Loopback diagnostics on a line or a connection (addlnloop, tstcon, and tstdelay commands).

•Bit error rate test (BERT) functionality with loopback pattern generation and verification on individual lines. For a description of BERT functions, see the section “Bit Error Rate Testing Through an MGX-SRM-3T3.”

Card and Service Configuration 6-41

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Cisco Systems MGX-FRSM-2T3E3, MGX-FRSM-2CT3 manual Eight-Port Circuit Emulation Service Modules, Structured Data Transfer
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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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