The Cisco Fourth-Generation T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4451-X integrated services routers. These cards combine WAN-interface-card (WIC),voice-interface-card (VIC),ISDN Primary Rate Interface (PRI),dial-access integration,and channelized-data (CE1T1) functions to provide unparalleled flexibility,versatility,and investment protection through their many uses. Customers who choose to integrate data and voice in multiple steps preserve their investment in a T1/E1 WAN interface.
The T1/E1 modules contain an onboard Cisco Packet Voice Digital Signal Processor Module 4 (PVDM4) slot,which requires a fourth-generation PVDM4 module. A PVDM4 on the T1/E1 module is necessary for the voice features. The PVDM4 also provides for echo cancellation of up to 128-ms echo-tail length for demanding network conditions.
Basic T1/E1 data
T1/E1 packet voice
Mixed data and packet voice
Mixed data and packet voice with drop and insert
|Device Type||Expansion module|
|Form Factor||Plug-in module|
|Ports||T1/E1 x 2|
|Data Transfer Rate||2.048 Mbps|
|Remote Management Protocol||SNMP,Telnet|
|Line Coding Format||AMI,B8ZS,HDB3|
|Status Indicators||Carrier detect,alarm|
|Expansion / Connectivity|
|Interfaces||2 x T1/E1|
|Dimensions & Weight|