Part Number |
Number of Ports |
Clear-Channel Data |
MFT Packet Voice |
Unstructured E1 (G.703) Support |
Channelized Data |
NIM-1MFT-T1/E1 |
1 |
Yes |
Yes |
No |
No |
NIM-2MFT-T1/E1 |
2 |
Yes |
Yes |
No |
No |
NIM-4MFT-T1/E1 |
4 |
Yes |
Yes |
No |
No |
NIM-8MFT-T1/E1 |
8 |
Yes |
Yes |
No |
No |
NIM-1CE1T1-PRI |
1 |
Yes |
Yes |
Yes |
Yes |
NIM-2CE1T1-PRI |
2 |
Yes |
Yes |
Yes |
Yes |
NIM-8CE1T1-PRI |
8 |
Yes |
Yes |
Yes |
Yes |
NIM-1MFT-T1/E1 Specifications |
Capacity |
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
|
T1 Network Interface |
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 |
E1 Network Interface |
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 |
Module Specifications |
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 50°C (32 to 122°F)
● Storage temperature: -20 to +65°C (-4 to 148°F)
● 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 |
0.40 lb (181g) |
The Cisco Fourth-Generation 1-, 2-, 4-, and 8-Port T1/E1 Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) support data and voice applications on the Cisco 4000 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 superior 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.
Product Features
- ● Basic T1/E1 data: The MFT versions act as WICs, supporting T1, fractional T1, E1, and fractional E1. To simplify remote management, these modules integrate a fully managed DSU/CSU for T1 deployments and a fully managed DSU for E1 deployments.
- ● E1/G.703 data: In addition to the basic T1/E1 data support, the CE1T1 versions also support structured G.703 with G.704 framing and unstructured E1 (G.703) applications.
- ● T1/E1 packet voice: All the modules support packet voice applications by providing T1, fractional T1, E1, and fractional E1 connections to private branch exchanges (PBXs) and central offices, thereby enabling new services and reducing voice and fax toll charges. An additional onboard PVDM4 is required. Also, each NIM has its own PVDM4, so each module can be connected to a different service provider with no single clock domain restriction.
- ● Mixed data and packet voice: All the modules can simultaneously support both data and voice, reducing the complexity and number of network components and facilitating a graceful migration to bandwidth-efficient packet voice.
- ● Mixed data and packet voice with drop and insert: You can deploy all the modules as T1/E1 drop-and-insert multiplexers with integrated DSUs/CSUs, reducing the complexity of the network and the cost of the central-office ports by efficiently combining time-division multiplexing (TDM) voice (PBX), IP voice, and data on the same trunks.
Quick Specs
Table 1 shows the Quick Specs.
Model |
NIM-1MFT-T1/E1 |
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
|
Dimensions (H x W x D) |
1.25 x 3.50 x 7.24 in. (3.18 x 8.89 x 18.39 cm) |
* channel-group refers to bonding of one or more time slots into a single High-Level Data Link Control (HDLC)-framed serial connection for IP data traffic connectivity. This connection is used for HDLC, Frame Relay, and Multilink PPP (MLPPP) serial WAN connections.
* ds0-group refers to bonding of one or more time slots into a single TDM voice connection using CAS such as ear and mouth (E&M), foreign exchange station (FXS), or foreign exchange office (FXO). This connection is used for TDM PBX or PSTN connections and typically is deployed only on T1.
* pri-group refers to bonding of two or more time slots into a single TDM connection using ISDN signaling. This connection is typically used for TDM PBX or PSTN voice connections on T1 and E1, and also for data WAN connections on E1. Each call on the PRI is individually indicated as being a voice or data call with the ISDN bearer capability delivered with the call. Signaling is done on the D-channel, which is always channel 24 on a T1 and channel 31 on an E1.
* tdm-group refers to cross-connecting one or more time slots from one TDM interface to another. This connection is used to groom channels from different access points onto a combined T1 or E1 uplink. Because the router merely cross-connects and does not interpret or route the traffic from the ingress interface to the egress interface, the traffic type (voice and data) is transparent to the router.
Compare to Similar Items
Table 2 shows the comparison to similar items.
Part Number |
Number of Ports |
Clear-Channel Data |
MFT Packet Voice |
Unstructured E1 (G.703) Support |
Channelized Data |
NIM-1MFT-T1/E1 |
1 |
Yes |
Yes |
No |
No |
NIM-2MFT-T1/E1 |
2 |
Yes |
Yes |
No |
No |
NIM-4MFT-T1/E1 |
4 |
Yes |
Yes |
No |
No |
NIM-8MFT-T1/E1 |
8 |
Yes |
Yes |
No |
No |
NIM-1CE1T1-PRI |
1 |
Yes |
Yes |
Yes |
Yes |
NIM-2CE1T1-PRI |
2 |
Yes |
Yes |
Yes |
Yes |
NIM-8CE1T1-PRI |
8 |
Yes |
Yes |
Yes |
Yes |
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