CISCO NIM-2MFT-T1/E1 EXPANSION MODULE
The Cisco Fourth-Generation T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4451-X integrated services routers. These cards combine WAN-interface-card (WIC), voice-interface-card (VIC), ISDN Primary Rate Interface (PRI), dial-access integration, and channelized-data (CE1T1) functions to provide unparalleled flexibility, versatility, and investment protection through their many uses. Customers who choose to integrate data and voice in multiple steps preserve their investment in a T1/E1 WAN interface. The T1/E1 modules contain an onboard Cisco Packet Voice Digital Signal Processor Module 4 (PVDM4) slot, which requires a fourth-generation PVDM4 module. A PVDM4 on the T1/E1 module is necessary for the voice features. The PVDM4 also provides for echo cancellation of up to 128-ms echo-tail length for demanding network conditions.
Specifications
| Serial data (channel-group) | 2 per port |
| E1 unframed G.703 | Not supported |
| Voice channel associated signaling (CAS) (ds0-group) | 24 per port (T1) 31 per port (E1) 1 per timeslot |
| PRI (pri-group) | 1 per port |
|
Drop and insert (tdm-group) |
24 per port (T1) 31 per port (E1) 1 per timeslot |
| Transmit bit rate | 1.544 Mbps 50 bps/32 ppm |
| Receive bit rate | 1.544 Mbps 50 bps/32 ppm |
| Line code | Alternate mark inversion (AMI) and binary 8-zero substitution (B8ZS) |
| AMI ones density | Enforced for n x 56-kbps channels |
| Framing format | D4 (Super Frame [SF]) and Extended Super Frame (ESF) |
| Output level (line build-out [LBO]) | 0, -7.5 or -15 dB |
| Input level | 1 dB0 down to -24 dB0 |
| Data-terminal-equipment (DTE) interface (WIC mode) | Fractional service |
| DTE interface (VIC mode) | G.704 or structured |
| Data-communications-equipment (DCE) interface | G.704 or structured |
| Transmit bit rate | 2.048 Mbps 100 bps/50 ppm |
| Receive bit rate | 2.048 Mbps 100 bps/50 ppm |
| Data rate | 1.984 Mbps (framed mode) per E1 port |
| Clocking | Internal and loop (recovered from network) |
| E1 national bits | Fixed (nonconfigurable) |
| Encoding | High-density bipolar three (HDB3) |
| DTE interface (WIC mode) | Fractional service |
| DTE interface (VIC mode) | G.704 or structured |
| DCE interface | G.704 or structured |
| Dimensions (H x W x D) | 1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm) |
| Environmental | Operating temperature: 0 to 50C (32 to 122F) Storage temperature: -20 to +65C (-4 to 148F) Relative humidity: 10 to 85% noncondensing operating; 5 to 95% noncondensing, nonoperating |
| T1 Compliance (partial list) | TIA-968-A CS-03 Jate ANSI T1.403 |
| E1 Compliance (partial list) | TBR4, TBR12, and TBR13 ITU-T G.703, G.704, G.823, and I.431 S016 (Australia) |
| Weight | 0.42 lb (191g) |