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2 x T1

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Additional Information

Manufacturer CISCO
Manufacturer Part Number NM-HDV-2T1-48
SKU GROUP-153118
Marketing Information This voice/fax module provides two T1 connections with drop and insert and support for 48 channels of medium complexity voice compression using any of the following VoCoders. G.711, G.729a/b, G.726, and fax. This module can also be used to provide 24 channels of high and/or medium complexity voice compression split between the two T1 ports using any of all of the following VoCoders. The NM-HDV-2T1-48 consists of a network module, voice interface card, and digital signal processors.
Description 2 x T1
Module Type EM Network Modules
Application/Usage Data Networking
  • Supported Platforms & Minimum IOS Versions:
  • 3745 - 12.2(8)T
  • 3725 - 12.2(8)T
  • 3660 series - 12.0(5)XK
  • 3640 - 12.0(5)XK
  • 3620 - 12.0(5)XK
  • 2691 - 12.2(8)T1
  • 2650 - 12.1(3)T
  • 2600XM Series - 12.1(14) or 12.2(8)T1
  • 2600 series - 12.0(5)XK
  • 1720 - Not Supported
  • 1600 series - Not Supported
Product Name Voice/Fax Network Module
Interfaces/Ports Details
  • 2 x RJ-48 Connector
  • 48 x Channel T1
Limited Warranty 90
Maximum Data Transfer Rate 1.54 Mbit/s
Alt Part No NMHDV2T148
Product Type Network Module
Additional Information
  • Modular Router Solutions:
  • Voice & Fax Integration
  • VPN & Firewall Solutions
  • Flexibility:
  • Programmable digital signal processors can support G.711, G.723, G.726, G.728, G.729 and G.729a/b for customized solutions to meet the need for high voice quality and bandwidth efficiency
  • Packet Voice Digital Signal Processor Modules (PVDM-12=), provide the ability to increase the voice processing capabilities within this single network module
  • Single or dual connections to PBXs, PSTNs or both using E1 or T1 interfaces via either a single or dual port E1 or T1 MultiFlex Voice/WAN interface card (VWIC) with integrated T1 CSU/DSU or E1 DSU
  • Modular voice processing on the packet voice trunk Network Module, the Cisco 2600 and 3600 provide the power to support additional office requirements such as routing, dial concentration, firewall and VPN
  • Dual-port, 48 channel T1 voice/fax network module:
  • Supports 48 channels of medium complexity VoCoders: G.729a/b, G.726, G.711, and fax or 24 channels of G.726, G.729, G.723.1, G.728, G.729a/b, G.711, and fax
  • Ccontains an integrated add/drop multiplexer
  • Clock Support: Pull-in range +/-64 PPM, Pass-through +/-32 PPM
  • Line Code: AMI, B8ZS
  • AMI Ones Density: Enforced for N x 56kbps channels
  • Framing Format: D4 (SF) and ESF
  • Line Frequency: 1.544 Mbps +/- 75 bps/32PPM
  • DTE/DCE Interface (VIC mode): G.704/structured
  • DSU/CSU:
  • Selectable DSX-1 cable length in increments from 0 to 655 feet in DSU mode
  • Selectable DS1 CSU line build-out: 0, -7.5, -15, and -22.5 dB
  • Selectable DS1 CSU receiver gain: 26 or 36 dB
  • Digital Signaling Protocol: H.323
  • Data Compression Protocol:
  • G.729
  • G.711
  • G.723.1
  • G.728
  • G.726
  • Comments:
  • Can be field upgraded by adding one additional DSP module (PVDM-12=)
Shipping Weight (Approximate) 3 lb
SKU UNSPSC 43222600
SKU UPC 7.46E+11


2 x T1

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