Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 155

Chapter 8 Connecting Voice Network Modules
Installing PVDM2 Modules
The NM-HDV2 network modules contain four 80-pin SIMM sockets for PVDM2 modules, numbered 0
through 3. (See
Figure 8-17 PVDM2 Module Slot Locations
3
PVDM2 Module Orientation
PVDM2 modules are manufactured with a polarization notch to ensure proper orientation, and alignment
holes to ensure proper positioning.
PVDM2 module. PVDM2 modules are installed with the connector edge down, the polarization notch
near the back of the chassis.
To avoid damaging ESD-sensitive components, observe all ESD precautions. To avoid damaging the
Caution
NM-HDV2 network module, avoid using excessive force when you remove or replace PVDM2 modules.
Figure 8-18 PVDM2 Module Orientation
OL-2485-20
Figure 8-17.) Each socket can be filled with a single 80-pin PVDM2 module.
2
Alignment holes
Connector edge
Alignment notch
IP Communications High-Density Digital Voice or Fax Network Module
1 0
Figure 8-18 shows the polarization notch and alignment holes on a
Cisco Network Modules Hardware Installation Guide
Polarization notch
8-13