Cisco Cisco NM-1V One Voice Fax Interface Card Slot Network Module 技术手册

Introduction
 Prerequisites
      Requirements
      Components Used
      Conventions
 Background Information
      Key Features
      Hardware Configuration Options
      DSP Resource Sharing
      Single−Point Configuration of MGCP Voice Gateways in AVVID Networks
      Network Clock Timing
      Configuring Drop and Insert
 Configure
      Network Diagram
      Configurations
 Verify
 Troubleshoot
      Troubleshooting Procedure
 Related Information

This document provides a sample configuration for the IP Communications High−Density Digital Voice/Fax
Network Module feature, which supports high−density digital voice and low−density analog voice
connectivity along with data and integrated access connectivity. The network modules offer built−in T1/E1
ports, and include a single voice interface card (VIC)/voice WAN interface card (VWIC) slot for Foreign
Exchange Station (FXS), Foreign Exchange Office (FXO), E&M, software−configured Centralized Automatic
Message Accounting (CAMA), direct inward dialing (DID), BRI, or E1 and T1 cards, up to a maximum of
four T1/E1 ports. The network modules also support up to 32 HDLC channels with an aggregate capacity of
2.048 Mbps.

Note: The CAMA card (VIC−2CAMA) is not supported. However, any port on the VIC2−2FXO and the
VIC2−4FXO can be software configured to support analog CAMA for dedicated E−911 services (North
America only).

You can potentially encounter the following symptoms or error messages when configuring IP
Communications High−Density Digital Voice/Fax Network Module:

% No DSP resources available to configure pri−group on controller T1

• 

%XCCTSP_VOICE−3−NOSDB: No signaling data block is available to build the voice interface
(1/0:23) or DSP may not be present

•