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The IP Communications High Density Voice Network Modules combine WAN Interface Card (WIC) and Voice Interface Card (VIC) functionality to provide unparalleled flexibility and power. The High Density Voice Network Module can support up to 60 simultaneous mid-complexity voice compression codecs or algorithms.

The IP Communications High Density Digital Voice/Fax Network Modules deliver these functions:

• high density digital voice connectivity

• high density WAN connectivity

• analog voice connectivity

• capability to conference and transcode in a network module form factor

The network modules provide enterprises, managed service providers, and service providers with the ability to directly connect devices to Cisco^® 2600XM, Cisco 2691, 2811, 2821, 2851, Cisco 3700 Series and Cisco 3800 Series Access Routers for either IP Communications capabilities or pure toll bypass. These are the devices:

• public switched telephone network (PSTN)

• traditional telephony equipment, such as private branch exchange (PBX), key systems, analog telephones, and fax machines

• WAN

The IP Communications High Density Digital Voice/Fax Network Modules flexibly operates within these two different Cisco Architecture for Voice, Video and Integrated Data (AVVID) IP Telephony environments:

• Cisco CallManager system with Survivable Remote Site Telephony (SRST)

• Cisco CallManager Express

The network modules can be integrated with these IP Telephony solutions in a Multiservice Access Router in order to provide a complete IP Communications solution for full service branch customers.