Cisco Cisco IOS Software Release 12.3(14)T

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      Second-Generation 1- and 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Cards
Information About Second-Generation 1- and 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Cards
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Cisco IOS Release 12.3(14)T
When you are configuring the clock source independent and no clock source independent commands, 
the channel group has to be removed from the configuration.
Information About Second-Generation 1- and 2-Port T1/E1 
Multiflex Trunk Voice/WAN Interface Cards 
This section provides information about the following:
Second-Generation 1- and 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface 
Cards Key Features
The second-generation 1- and 2-port T1/E1 multiflex trunk voice/WAN interface cards have the 
following key features:
Full support for T1 Facility Data Link (FDL)
Controller local loopbacks
Controller remote loopbacks
RFC 1406 and integrated CSU/DSU MIB
MIB and Simple Network Management Protocol (SNMP) management
Firmware to support T1 and E1 Layer 1 homologation
User-initiated VWIC reset and field-programmable gate array (FPGA) download
Voice support (includes DS0-group and PRI-group configuration)
 lists the names and descriptions of the modules available for this feature. 
Table 1
Modules with Second-Generation 1- and 2-Port T1/E1 Multiflex Trunk Voice/WAN 
Interface Cards
Module Name
1
1.
These baseboards can also provide hardware echo cancellation if there is a daughter card (EC-MFT-32 or EC-MFT-64) 
mounted on the baseboard. For more information, refer to the Voice Port Configuration Guide on Cisco.com.
Description
VWIC2-1MFT-T1/E1
1-port RJ-48 multiflex voice/WAN trunk (T1/E1) 
VWIC2-2MFT-T1/E1
2-port RJ-48 multiflex voice/WAN trunk (T1/E1)
VWIC2-1MFT-G703
2
2.
Although unstructured G.703 operation is particular to E1 operation, the VWIC2-1/2MFT-G703 cards also support structured 
T1 operation.
1-port RJ-48 multiflex trunk (E1 G.703)
VWIC2-2MFT-G703
2-port RJ-48 multiflex trunk (E1 G.703)