8-10
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 8 Connecting Voice Network Modules
IP Communications High-Density Digital Voice or Fax Network Module
Figure 8-14 NM-HDV2-1T1/E1
Figure 8-15 NM-HDV2-2T1/E1
The NM-HDV2 network module converts voice and fax into IP packets or frames that can be transmitted
as VoIP over a variety of transport technologies (channelized T1, Frame Relay, Asynchronous Transfer
Mode [ATM], and others).
Packet Fax or Voice DSP Modules
The packet fax or voice digital signal processor (DSP) module (PVDM2) is available in five
stock-keeping units (SKUs):
You can install up to four PVDM2 modules on all of the NM-HDV2 SKUs. The number of channels
supported depends on the number and density-type of PVDM2 modules installed.
NM-HDV2-1T1/E1
PVDM 3
PVDM 2
PVDM 1
CTRLR T1/E1 0
See Manual before Installation.
PVDM 0
V0
AL
LP
CD
EN
95197
NM-HDV2-2T1/E1
PVDM 3
PVDM 2
PVDM 1
CTRLR T1/E1 0
See Manual before Installation.
PVDM 0
V0
AL
LP
CD
AL
LP
CD
EN
95198
CTRLR T1/E1 1
Table 8-1
PVDM2 Module SKUs
Module Name
Description
PVDM2-8
8-channel packet fax or voice DSP module
PVDM2-16
16-channel packet fax or voice DSP module
PVDM2-32
32-channel packet fax or voice DSP module
PVDM2-48
48-channel packet fax or voice DSP module
PVDM2-64
64-channel packet fax or voice DSP module
Table 8-2
Channels Per PVDM2 Module Type
Module Name
Max Channels for High
Complexity
1
Max Channels for
Medium Complexity
2
Range of Channels for
Flexi Complexity
3
PVDM2-8
4
4
4-8
PVDM2-16
6
8
6-16