Cisco Network Module VWIC3-4MFT-T1E1 4-Port 3rd Gen Multiflex Trunk
Voice/WAN Int
VWIC3-4MFT-T1E1 Oveview
The Cisco Third-generation 1-, 2-port and 4-port T1/E1 Multiflex
Trunk Voice/WAN Interface (MFT VWIC3s) support data and voice
applications on the Cisco 1921, 1941 and 1941W (data only), and the
Cisco 2901, 2911, 2921, 2951, 3925, 3945, 3925E and 3945E
Integrated Services Routers. The Cisco MFT VWIC3 combines
WAN-interface-card (WIC) and voice-interface-card (VIC) functions
to provide unparalleled flexibility, versatility, and investment
protection through its many uses. Customers who choose to integrate
data and voice in multiple steps preserve their investment in a
T1/E1 WAN interface because the Cisco MFT VWIC3 cards can be reused
in packet voice applications. The 2 port T1/E1 MFT VWIC3 is shown
below.The Cisco MFT VWIC3 interface cards add improvements over the
Cisco Second-generation 1- and 2-port T1/E1 Multiflex Voice/WAN
Interface Cards (MFT VWIC2s). The Cisco 2- and 4-port MFT VWIC3s
enable each port to be clocked from an independent clock source for
data applications. Voice applications can now be clocked
independently from data applications, with all ports for voice
applications clocked from a single source. The Cisco MFT VWIC3s use
the ECAN on the motherboard PVDM cards with up to 128ms echo-tail
length for demanding network conditions. MFT VWIC3 cards support up
to 2 channel groups per T1/E1 port for serial data applications.
Refer to Table 3 for all configuration options offered with the MFT
VWIC3 cards.
VWIC3-4MFT-T1E1 Specification
| VWIC3-4MFT-T1/E1 |
| Manufacturer | Cisco |
| Part Number | VWIC3-4MFT-T1/E1 |
| Device Type | Interface module |
| Form factor | 4-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card |
| Specifications |
| Number of Ports | 4 |
| T1 Support | Yes |
| E1 Support | Yes |
| Unstructured E1 (G.703) Support | No |
| Data Support WIC Mode | Yes |
| Voice Support VIC* | Yes |
| Drop-and-Insert Multiplexing | Yes |
| Configuration Comparison |
| Serial Data (channel-group*) | 4 total |
| 1 per port |
| Voice CAS (ds0-group**) | 96 total (T1) |
| 124 total (E1) |
| 1 per timeslot |
| PRI (pri-group***) | 4 total |
| 1 per port |
| Drop & Insert (tdm-group****) | 96 total (T1) |
| 124 total (E1) |
| 1 per timeslot |
| Network Management Features |
| Telnet or Console | Remote and local configuration, monitoring, and troubleshooting
from Cisco IOS Software CLI |
| Simple Network Management Protocol (SNMP) | • Router and DSU/CSU managed by single SNMP agent; router, DSU, and
CSU appear as a single network entity to user |
| • Standard MIB (MIB II) |
| • Cisco Integrated DSU/CSU MIB |
| • RFC 1406 T1 MIB, Including Alarm Detection and Reporting |
| SNMP Traps | Generated in response to alarms |
The Cisco MFT VWIC3 interface cards add improvements over the Cisco
Second-generation 1- and 2-port T1/E1 Multiflex Voice/WAN Interface
Cards (MFT VWIC2s). The Cisco 2- and 4-port MFT VWIC3s enable each
port to be clocked from an independent clock source for data
applications. Voice applications can now be clocked independently
from data applications, with all ports for voice applications
clocked from a single source. The Cisco MFT VWIC3s use the ECAN on
the motherboard PVDM cards with up to 128ms echo-tail length for
demanding network conditions. MFT VWIC3 cards support up to 2
channel groups per T1/E1 port for serial data applications. Refer
to Table 3 for all configuration options offered with the MFT VWIC3
cards.
The Cisco MFT VWIC3 cards can be inserted into the EHWIC slot on
the supported Cisco 1921, 1941, 1941W, 2901, 2911, 2921, 2951,
3925, 3945, 3925E and 3945E integrated services routers. The T1/E1
MFT VWIC3 cards support both T1 and E1, providing additional
flexibility in configuring the Cisco MFT VWIC3s for supporting T1,
fractional T1, E1, and fractional E1 for both voice and WAN
applications. All MFT VWIC3 modules include the drop-and-insert
multiplexing capability, which eliminates costly external
third-party channel service units/data service units (CSUs/DSUs)
and drop-and-insert multiplexers.
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