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DATA SHEET

CISCO ONE AND TWO PORT
T1/E1 MULTIFLEX VOICE/WAN INTERFACE CARDS
Flexible multiservice solution supports multiple voice, data and integrated voice/data applications, facilitating the migration
from data only or channelized voice and data to packet voice solutions and simplifying deployment, management and
sparing.

INTRODUCTION
The Cisco 1 and 2-port T1/E1 Multiflex Voice/WANInterface Cards (“Multiflex VWICs”) support voice, and data applications in Cisco 2600,
2800, 3600, 3700, and 3800 multiservice routers. The Multiflex VWIC combines WAN Interface Card (WIC) and Voice Interface Card (VIC)
functionality to provide unparalleled flexibility, versatility and investment protection through its many uses. Customers who choose to integrate
voice and data in multiplesteps preserve their investment in a T1/E1 WAN interface since the Multiflex VWIC can be reused in packet voice
applications.
The T1/E1 Multiflex Voice/WAN Interface Cards are offered in single and dual port versions which can be used and then re-deployed as network
requirements change, thereby addressing several applications:
• Data—As a WIC for T1/fractional T1, and E1/fractional E1applications. The 1- and 2- port E1 versions include models that support unframed
G.703. To simplify remote management issues the T1 version integrates a fully managed data service unit/channel service unit (DSU/CSU) and
the E1 version includes a fully managed DSU.
• Packet Voice—As a VIC for the Digital T1/E1 Packet Voice Trunk Network Module (NM-HDV), IP Communication Voice Network Module
(NM-HD-2VE),and IP Communication High-Density Voice Network Module (NM-HDV2) to provide T1 or E1 connections to Private Branch
Exchanges (PBXs) and central offices (COs) enabling new services and reducing voice/fax toll charges.
• Multiplexed Voice/Data—As a dual port T1 or E1 Drop and Insert Multiplexer with integrated DSU/CSUs, reducing the complexity and number
of network components and facilitating agraceful migration to bandwidth efficient packet voice.

Figure 1.

Cisco Dual Port T1/E1 Multiflex Voice/WAN Interface Card

VWIC-1MFT-T1, VWIC-2MFT-T1, VWIC-2MFT-T1-D1, VWIC-1MFT-E1, VWIC-2MFT-E1, VWIC-2MFT-E1-DI, VWIC-1MFT-G703,
VWIC-2MFT-G703
KEY BENEFITS
Reduces networking lifecycle costs
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• Enables graceful migration from data-only to multiplexed voice and data to packetized voice applications
• Reduces training, deployment, management and sparing inventory over single purpose interfaces Maximizes investment protection
• Multifunction support for LAN to LAN routing, multiplexed voice and data, and packetized voice
• Modules sharedbetween Cisco 2600, 2800, 3600, 3700 and Cisco 3800 series
• E1 versions support both balanced and unbalanced modes
• Specific models to support E1 G.703 unframed for utilizing the full 2.048 Mbps (Note: The G.703 models can also be configured for framed
mode where they support all the features of the other VWIC models). Improves branch-office network manageability and reliability
• Eliminatescostly external third party CSU/DSUs and drop and insert multiplexers
• Simplifies remote network management by allowing a single management tool such as CiscoView or CiscoWorks to support router, CSU/DSU,
drop and insert multiplexer
Maximizes system resources
• Increases T1/E1 port density supported on Cisco 2600, 2800, 3600, 3700 and 3800 multiservice access routers - up to 4 T1/E1 withintegrated
CSU/DSU in a single Network Module slot or up to two T1/E1 connections in a single WIC slot
• Easy Migration to bandwidth efficient packet voice, enabling new services
Customers who choose to integrate voice and data in stages preserve their investment in WAN interfaces. For example, the Multiflex VWIC can
support data only applications as a WAN interface, then be re-used to integrate...