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Data Sheet

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Cisco IP Communications Voice/Fax Network Module

Cisco IP Communications Voice/Fax Network Modules for the Cisco 2800, 2900, 3800, and 3900 Series

Unified Communications Routers

The Cisco® IP Communications voice/fax network modules provide enterprises, managed service providers, and

service providers the ability to directly connect the public switched telephone network (PSTN) and traditional

telephony equipment (private branch exchange [PBX], key system, analog telephones, fax machines, etc.) to Cisco

2800, 2900, 3800 and 3900 Series Unified Communications routers. This set of Cisco IP Communications voice/fax

network modules delivers the most versatile combination of analog and digital voice and data capabilities in a single

network module. As a completely integrated component of the Cisco Unified Communications solution including

Cisco Unified Communications Manager (UCM), Cisco IP phones, Cisco Unity

® unified messaging software, Cisco IP

Contact Center (IPCC), and the entire line of Cisco IP Communications products, the Cisco IP Communications

voice/fax network modules are a cornerstone of Cisco Unified Communications. When used in a Cisco unified

communications router with Cisco UCM, Cisco Unified Survivable Remote Site Telephony (SRST), or Cisco UCM

Express, the Cisco IP Communications voice/fax network module is a complete IP Communications solution for the

business branch.

Figure 1 shows the IP Communications voice/fax network module with one VWIC2-2MFT-T1/E1 and one VIC3-

4FXS/DID.

Figure 1. NM-HD-2VE with One VWIC2-2MFT and One VIC3-4FXS/DID

The Cisco IP Communications voice/fax network modules for the Cisco 2800, 2900, 3800, and 3900 Series unified

communications routers enable packet voice technologies including VoIP (H.323, Media Gateway Control Protocol

[MGCP], and Session Initiation Protocol [SIP]). Cisco Unified Communications solutions provide the means for

integrating voice and data within a single network, allowing users to take advantage of services such as IP

telephony, integrated services, and toll-bypass while providing an opportunity to improve productivity. By operating

on Cisco IOS Software, these solutions incorporate advanced quality-of-service (QoS) features, intelligent network

queuing, and standards-based encapsulation, providing efficient direct transport of both voice and fax over IP

networks. Cisco IOS Software solutions enable time-sensitive voice traffic to be moved across even low-bandwidth

WAN connections with the priority and quality that voice and fax demand. Transporting voice over IP networks

continues to provide transport flexibility because IP can be routed across a multitude of WAN technologies (leased

lines, Frame Relay, and ATM) along with providing direct connectivity to the desktop.

Product specificaties