Table of Contents

Features
Specifications

Physical Specifications
T1 Interface Specifications
E1 Interface Physical Characteristics
Software

Ordering Information

Multiport T1/E1 ATM Network Modules

Four new multiport T1/E1 ATM network modules with Inverse Multiplexing over ATM (IMA) are now available for both the 2600 and 3600 Series Multiservice Access platforms. Available in both four and eight port versions, these new multiport ATM modules allow Service Provider and Enterprise customers to cost-effectively increase bandwidth, extending multiservice capabilities to remote branch-office locations through ATM.

The 2600 and 3600 Series Multiservice platforms provides IMA access as an affordable LAN-to-WAN solution for branch office, Regional or Campus and ATM Edge applications. Multiport T1/E1 IMA modules enable Service Providers to deliver critical integrated ATM services combining voice, video, and data with ATMs guaranteed Quality of Service (QoS) features. With multiport IMA deployed as CPE edge equipment, network service providers can deliver unmatched flexibility in the types of services they can offer to their customers

Multiport T1/E1 IMA network modules functionality allows access to ATM WAN uplinks that have bandwidth requirements between DS1 and DS3 rates. Each T1 link provides 1.544 Mbps and each E1 link provides 2.048 Mbps connectivity and with IMAs aggregation of multiple T1/E1s, network managers have the ability to increase bandwidth inexpensively to allow wide-area networking (WAN) uplinks at speeds ranging from 1.544 Mbps to 16 Mbps full-duplex on a single card.

All four multiport ATM network modules support the ATM Forum Adaptation Layer 5 (AAL5) with ATM Quality of Service (QoS) categories UBR, VBR-rt, VBR-nrt, and ABR. Voice over IP (VoIP) and H.323 video over ATM can be supported using VBR-rt Class of Service parameters with both Digital and Analog Voice/Fax network modules with Voice Interface Cards (VICs).

The Cisco multiport T1/E1 ATM network modules provide a seamless end-to-end multiservice solution, interoperable with other ATM Forum IMA version 1.0 products available from Cisco, including the 7200/7500, MGX 8850/8220, IGX8400, LS1010, and 8500 series platforms.

Figure 17-119: 8-Channel IMA T1 Network Module

Figure 17-120: 4-Channel IMA E1 Network Module

Figure 17-121: 8-Channel IMA E1 Network Module

Features

• Supported on all 2600/3600 Series Multiservice platforms

• Supports 4 or 8 T1/E1 ATM ports

• Support for ATM Forum IMA Version 1.0

• Up to 16 Mbps full-duplex bandwidth with 8-port E1 IMA network module

• Supports UBR, VBR-rt, VBR-nrt, and ABR ATM Classes of Service

• Maximum of 4 active IMA groups on both 4 and 8 port versions

• Integrated CSU/DSU on T1 versions

• Integrated DSU for E1 versions

• ATM Forum UNI 3.0, UNI 3.1, and UNI 4.0 signaling

• ATM Adaptation Layer 5 (AAL5)

• PVCs and SVCs

• RFC 1483 support for Multiple Encapsulations over ATM

• RFC 1577 support for Routing over ATM

• Maximum of 256 VC`s per interface with up to 1024 simultaneous reassemblies per card

• Maximum differential delay tolerance of up to 200 ms

• F4 and F5 OAM cell support

• CRC32 error checking of AAL5,CRC10 checking of OAM cells

• IETF PPP over ATM

• MPOA Client and Server

• LANE 2.0 Client Only

• Tag Switching (packet interfaces only)

• ILMI

• NHRP (Next Hop Resolution Protocol)

• ATM Bandwidth (Resource) Manager

Specifications

Physical Specifications

Bandwidths Supported

• 4 and 8-port T1 ATM Network Modules: From 1.544 to 12.352 Mbps

• 4 and 8-port E1 ATM Network Modules: From 2.048 to 16.384 Mbps

T1 Interface Specifications

• Line Rate: 1.544 Mbps

• Line Code: Binary 8-zero substitution (B8ZS) per ANSI T1.408

• Line Framing: Extended superframe (ESF) per ANSI T1.408

• Input jitter tolerance: Per ATT TR64211

• Output jitter generation: Per ATT TR62411

• Physical layer alarms: Loss of Frame (LoS), Out of Frame (OOF), Alarm indication signal (AIS) and Remote deflect Identification (RDI)

E1 Interface Physical Characteristics

• Line rate: 2.048 Mbps

• Line code: HDB3, AMI

• Line framing: 16-frame multiframe per ITU G.704

• Input jitter tolerance: Per ITU G.823 for 2.048 Mbps operation

• Output jitter tolerance: Per ITU G.823

• Physical Layer alarms: LoS, OOF, AIS, RDI

Software

Ordering Information

Posted: Wed Sep 27 05:14:49 PDT 2000
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