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Table of Contents
Understanding 2−Port Serial WAN Interface Card (WIC−2T).....................................................................1
Document ID: 7261..................................................................................................................................1
Introduction..........................................................................................................................................................1
Before You Begin................................................................................................................................................1
Conventions............................................................................................................................................1
Prerequisites............................................................................................................................................1
Components Used...................................................................................................................................1
Product Numbers.................................................................................................................................................2
Features................................................................................................................................................................2
Cables...................................................................................................................................................................2
Platform Support..................................................................................................................................................3
Known Problems..................................................................................................................................................3
Hardware Failures...................................................................................................................................3
Sample Configuration..........................................................................................................................................3
Related Information.............................................................................................................................................4
Cisco − Understanding 2−Port Serial WAN Interface Card (WIC−2T)
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Understanding 2−Port Serial WAN Interface Card
(WIC−2T)
Document ID: 7261
Introduction
Before You Begin
Conventions
Prerequisites
Components Used
Product Numbers
Features
Cables
Platform Support
Known Problems
Hardware Failures
Sample Configuration
Related Information
Introduction
The dual−serial port WAN interface cards (WICs) for the Cisco 2600 and 1700 series feature Cisco`s new,
compact, high−density Smart Serial connector to support a wide variety of electrical interfaces when used
with the appropriate transition cable. Two cables are required to support the two ports on the WIC. Each port
on a WIC is a different physical interface and can support different protocols such as Point−to−Point protocol
(PPP) or Frame Relay and Data Terminal Equipment/Data Communications Equipment (DTE/DCE).
Before You Begin
Conventions
For more information on document conventions, see the Cisco Technical Tips Conventions.
Prerequisites
There are no specific prerequisites for this document.
Components Used
This document is not restricted to specific software and hardware versions.
Cisco − Understanding 2−Port Serial WAN Interface Card (WIC−2T)
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Product Numbers
WIC−2T
2 Port Serial WAN Interface Card
Features
The WIC−2T provides two serial ports using the Smart Serial connector.
Asynchronous support with a maximum speed (per port) of 115.2 Kbps, minimum 600 bps. If you
need to run at speeds lower than 600 bps, use the AUX port instead.
•
Synchronous support with a maximum speed of 2.048 Mbps per port.
Supports one port at 8 Mbps when used in NM−1FE1R2W, NM−1FE2W, NM−2FE2W, or
NM−2W, or Cisco 2600 chassis WIC slots. All other WIC ports on that network module or
Cisco 2600 chassis must not be used.
♦
Supports two ports at 4 Mbps each when used in NM−1FE1R2W, NM−1FE2W,
NM−2FE2W, or NM−2W, or Cisco 2600 chassis WIC slots. All other WIC ports on that
network module or Cisco 2600 chassis must not be used.
♦
Supports 8 Mbps on all ports simultaneously on 2691, 3725, and 3745. No restrictions.
Maximum six ports at 8 Mbps each.
♦
•
Cables
The WIC−2T serial ports require Smart Serial cables. The following table lists the part number for the cables
that can be used with the WIC−2T card.
Cable Type
Product Number Length Male/Female
V.35 DTE
CAB−SS−V35MT(=)
10 feet / 3
meters
Male
V.35 DCE
CAB−SS−V35FC(=)
10 feet / 3
meters
Female
RS−232
DTE
CAB−SS−232MT(=)
10 feet / 3
meters
Male
RS−232
DCE
CAB−SS−232FC(=)
10 feet / 3
meters
Female
RS−449
DTE
CAB−SS−449MT(=)
10 feet / 3
meters
Male
RS−449
DCE
CAB SS−449FC(=)
10 feet / 3
meters
Female
X.21 DTE
CAB−SS−X21MT(=)
10 feet / 3
meters
Male
X.21 DCE
CAB−SS−X21FC(=)
10 feet / 3
meters
Female
EIA−530
DTE
CAB−SS−530MT(=)
10 feet / 3
meters
Male
Cisco − Understanding 2−Port Serial WAN Interface Card (WIC−2T)
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EIA−530A
DTE
CAB−SS−530AMT(=)
10 feet / 3
meters
Male
Platform Support
Platform Cisco
1600
Cisco
1700
Cisco 2600 Cisco 2600XM Cisco 3620, 3640, 3660
Cisco
Carrier
Module Not
Required
Not
Required
on−board NM−2W on−board NM−2W
NM−1E2W,
NM−1E1R2W,
NM−2E2W
NM−1FE2W,
NM−1FE1R2W,
NM−2FE2W,
NM−2W
Required
Cisco
IOS®
Support Not
supported
All Cisco
IOS
versions
All Cisco
IOS
versions
Cisco IOS
versions
12.0(7)XK,
12.1(1)T,
12.2, 12.2T
All Cisco
IOS
versions
Cisco IOS
versions
12.2(8)T1
Not supported
Cisco IOS
versions
12.0(7)XK,
12.1(1)T, 12.2,
12.2T
All Cisco
IOS
versions
The Cisco 1600 Series is not capable of supporting the WIC−2T due to lack of Serial Communications
Controllers.
The NM−1E2W, NM−1E1R2W, and NM−2E2W Network Modules do not have enough performance power
to support the WIC−2T due to hardware limitations.
Known Problems
The show version command shows WIC−2T as "low−speed". This is a display only (cosmetic) problem.
Hardware Failures
The WIC−2T and WIC−2A/S can be damaged by excessive electrostatic discharge. You can minimize this
electrostatic discharge in several ways.
Use shielded cable end−to−end.•
Use a data surge protector that protects against surges over +/− 18v.•
Use an optical isolator (best protection).•
Sample Configuration
The following is a sample configuration for the WIC−2T interface card.
Note: There are no framing, clocking or linecode parameters or commands being used here. This is because
this card does not have an integrated channel service unit/data service unit (CSU/DSU). You need to use an
external CSU/DSU.
Configuration
maui−soho−02(config)#interface Serial 2/0
maui−soho−02(config−if)#ip add 10.0.0.1 255.255.255.0
Cisco − Understanding 2−Port Serial WAN Interface Card (WIC−2T)
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maui−soho−02(config−if)#encapsulation ppp
maui−soho−02(config−if)#no shutdown
For more information on configuring the WIC−2T card refer to Configuring Serial Interfaces.
Related Information
1− and 2−Port Serial WAN Interface Cards•
Overview of Cisco Network Modules•
Technical Support − Cisco Systems•
All contents are Copyright © 1992−2005 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
Updated: Apr 19, 2005 Document ID: 7261
Cisco − Understanding 2−Port Serial WAN Interface Card (WIC−2T)
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