CISCO FOURTH-GENERATION MULTI-FLEX TRUNK VOICE/CLEAR-CHANNEL DATA T1/E1 MODULE – EXPANSION MODULE
Cisco Fourth-Generation Multi-flex Trunk Voice/Clear-channel Data T1/E1 Module – Expansion module – T-1/E-1 – for Cisco 4451-X
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
• E1/G.703 data
• T1/E1 packet voice
• Mixed data and packet voice
• Mixed data and packet voice with drop and insert