[shortdesc] Expansion module T1/E1 x 2 T-1/E-1 For Cisco 4451-X [/shortdesc] [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-ACS-03JateANSI T1.403 E1 Compliance (partial list) TBR4, TBR12, and TBR13ITU-T G.703, G.704, G.823, and I.431S016 (Australia) Weight 0.42 lb (191g) [/specifications] 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.
