Network modules provide enterprises, managed service providers, and service providers with the ability to directly connect the public switched telephone network (PSTN), traditional telephony equipment (such as private branch exchange (PBX), key systems, analog telephones, and fax machines. This Module includes two built-in T1/E1 ports and a VIC/VWIC slot that can be fitted with either digital or analog/BRI voice/WAN interface cards. Supports a maximum of 120 channels of digital voice, or 60 channels of digital voice and four channels of analog voice in medium complexity codec. Must be used with up to four PVDM2 Packet Fax/Voice DSP modules.

Supported Platforms:
• 3845
• 3825
• 3745
• 3725
• 2691
• 2600XM Series

• VIC
• VWIC

• 110 V AC
• 220 V AC

• Network module contain four 80-pin SIMM sockets for PVDM2s
• Toll Bypass Support
• Telephony Interface Signaling Support
• Cisco SRST maintains basic telephony services at the branch office even if Wan goes down
• NM-HDV2-2T1/E1 with VIC2-4FXS/DID in VIC/VWIC slot. Enables FXS connectivity to analog phones/fax machines and 2 T1 digital trunk access the PSTN and WAN access.
• This Module Requires at least one and maximum of four Packet Fax/Voice DSP Module for voice calls
• Support for 4 to 120 channels with the new PVDM2 and featuring the latest digital signal processing technology
• The module is Interoperable with the full range of Cisco IP Communications solutions
• T1 Network Interface:
• Line Code: AMI, B8ZS
• AMI Ones Density: Enforced for N x 56 Kbps Channels
• Framing Format: D4 (SF) and ESF
• Output level (LBO): 0, -7.5, or -15 dB
• Input Level: +1dB0 down to -24 dB0
• DTE Interface (WIC mode): Fractional Service
• DTE Interface (VIC mode): G.704/Structured
• DCE Interface: G.704/Structured
• E1 Network Interface:
• Data Rate: 1.984 Mbps (framed mode) Per E1 Port
• Clocking: Internal and Loop (recovered from network)
• E1 National Bits: Fixed (non-configurable)
• Encoding: HDB3
• DTE Interface (WIC mode): Fractional Service
• DTE Interface (VIC mode): G.704/Structured
• DCE Interface: G.704/Structured