Below a Cisco 2600 Series WAN Interface Card Chassis Slot that shows a router with a "2E 2-slot module" in slot 1, One (1) serial, and one (1) ISDN BRI WAN interface card are installed in the module.
Below, Installing a Serial WAN Interface Card in a Two-Slot Network Module
WIC-1B-U for Cisco 2620 WAN interfaces for ISDN
Below, 1-Port ISDN-BRI with NT1 WAN Interface Card (U Interface), part WIC-1B-U. http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/wan_mod/conntwan.htm#xtocid103592The 1-Port ISDN-BRI with NT1 WAN interface cards (WIC-1B-U) connect to an ISDN WAN using a built-in NT1 device. This interface is also known as a U interface.
WIC-1DSU-T1 for Cisco 2620 WAN interfaces for Frame Relay
The 1-port T1/Fractionalized T1 (FT1) WAN interface card includes an integrated data service unit/channel service unit (DSU/CSU) and can be configured for either full T1 or fractionalized T1 services. http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/wan_mod/conntwan.htm#xtocid103592
1-Port T1/FT1 DSU/CSU Card
For this connection, use the straight-through RJ-48C-to-RJ-48C cable that came with your card.
B. Cisco 3660 Router in Each Regional Site
(Click the picture for Overview)
Cisco Link to 3600-Series Router Configurations
Cisco 3600-Series Router Configurations
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3600/
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis3600/3600ig/3600over.htm
Cisco 3600 series routers are modular access routers with LAN and WAN connections that can be configured by means of interchangeable modules and WAN interface cards. The modular design of the routers provides flexibility, allowing you to configure or reconfigure your router according to your needs.
This guide discusses the following router models:
Cisco 3640 Router
Cisco 3660 Router Slot Numbers
Hot Swapping Network Modules
Hot Swapping a Cisco 3660 Router Power Supply
NM-1CT1 ISDN PRI Network Modules to access each School site (Back-Up line)
The CT1/PRI and CT1/PRI-CSU modules receive and transmit data bidirectionally at the T1 rate of 1.544 Mbps.
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/net_mod2/conntpri.htm
The 1-port channelized T1/ISDN PRI network module---(Cisco
product number NM-1CT1 or CPANM-1CT1). This module is also referred to as the 1-port
CT1/PRI network module
NM-1CT1-CSU (Built CSU), alternative Channelized T1/ISDN PRI Network.
1-port channelized T1/ISDN PRI with CSU network module---(Cisco product number NM-1CT1-CSU or CPANM-1CT1-CSU). This module is also referred to as the 1-port CT1/PRI CSU network module.
Frame Relay Connection through Serial Network Modules to a each School Network
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/net_mod2/conntser.htm
Cisco 3660 Slot Numbers
Connecting an Asynchronous Network Module to an Asynchronous Device
4-Port and 8-Port Interface Numbering
. The table below shows the 4-Port and 8-Port Asynchronous Network Module Interface Numbering|
Slot Number |
Interface Numbers (4-Port Module) |
Interface Numbers (8-Port Module) |
|
0 |
1-4 |
1-8 |
|
1 |
33-36 |
33-40 |
|
21 |
65-68 |
65-72 |
|
31 |
97-100 |
97-104 |
|
1Cisco 3640 router only. |
This section provides information about the 4-port serial network module (Cisco product number NM-4T) for Cisco modular routers. With the appropriate serial transition cable, each port on this module can provide an EIA/TIA-232, EIA/TIA-449, V.35, X.21, DTE/DCE, EIA-530 DTE, or nonreturn to zero/nonreturn to zero inverted (NRZ/NRZI) serial interface, in any combination. The module provides a synchronous data rate of 8 MB/sec on port 0, 4 MB/sec each on port 0 and port 2, or 2 MB on all four ports simultaneously.
4-Port Serial Network Module
Other Useful links: