Cisco Network Module VWIC3-1MFT-T1/E1 Voice WAN Interface Card Expansion Module
Product Information
The Cisco 1-, 2- and 4-port MFT VWIC3 interface cards simplify branch-office connectivity by helping enable Cisco 2900 and 3900 routers to consolidate the functions of a router, a fully managed drop-and-insert multiplexer, and a fully managed DSU/CSU into a single box. (It is possible to use two Cisco 1-port MFT VWIC3 interface cards for supporting the drop-and-insert feature. Generally, a Cisco 2- or 4-port MFT VWIC3 is more appropriate because at least 2 ports are required.) Typically a drop-and-insert multiplexer is used for channelized (that is, TDM) integration of data and voice onto a single T1, fractional T1, E1, or fractional E1 connection to the central office. Sharing a line can significantly reduce costs over those of two separate physical lines to the central office. Although the normal use is for data and voice sharing of a T1 or E1 service, the drop-and-insert capability also can be used for video and data, or data and data sharing of the service.
Table 1 Quick Spec.
| Manufacturer | Cisco |
| Manufacturer Part | CISCO VWIC3-1MFT-T1E1 |
| Product Description | Cisco Third-Generation 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card - Expansion module - EHWIC - 2 ports - T-1/E-1 - for Cisco 1921, 1921 4-pair, 1921 ADSL2+, 1921 T1, 1941, 2901, 2911, 2921, 2951, 3925, 3945 |
| Device Type | Expansion module |
| Form Factor | Plug-in module |
| Interface (Bus) Type | VWIC |
| Ports Qty | 1 ports |
| Data Transfer Rate | 2.048 Mbps |
| Line Rate | T-1/E-1 |
| Designed For | Cisco 1921, 1921 4-pair, 1921 ADSL2+, 1921 T1, 1941, 2901, 2911, 2921, 2951, 3925, 3925E, 3945, 3945E |
Table 2 Cisco MFT VWIC3 Card Configuration Comparison.
| Configuration Description | 1-port Cards | 2-port Cards | 4-port Card |
| VWIC3-1MFT-T1/E1, | VWIC3-2MFT-T1/E1, | VWIC3-4MFT-T1/E1 |
| VWIC3-1MFT-G703 | VWIC3-2MFT-G703 | |
| Data Only |
| Serial Data (channel-group) | 2 total | 2 total | 4 total |
| 2 per port | 2 per port | 1 per port |
| Voice Only |
| Voice CAS (ds0-group) | 24 total (T1) | 48 total (T1) | 96 total (T1) |
| 31 total (E1) | 62 total (E1) | 124 total (E1) |
| 1 per timeslot | 1 per timeslot | 1 per timeslot |
| Voice, Video and Data |
| PRI (pri-group) | 1 total | 2 total | 4 total |
| 1 per port | 1 per port | 1 per port |
| Drop & Insert (tdm-group) | 24 total (T1) | 48 total (T1) | 96 total (T1) |
| 31 total (E1) | 62 total (E1) | 124 total (E1) |
| 1 per timeslot | 1 per timeslot | 1 per timeslot |
Table 3 Part Number and Descriptions of Cisco MFT VWIC3 Cards.
| Product Number | Description |
| VWIC3-1MFT-T1/E1 | 1-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card |
| VWIC3-2MFT-T1/E1 | 2-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card |
| VWIC3-4MFT-T1/E1 | 4-Port T1/E1 Multiflex Trunk Voice/WAN Interface Card |
| VWIC3-1MFT-G703 | 1-Port G.703 Multiflex Trunk Voice/WAN Interface Card |
| VWIC3-2MFT-G703 | 2-Port G.703 Multiflex Trunk Voice/WAN Interface Card |
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