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).
Supports two ports at 4 Mbps each when used in
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
Note: The X.21 interface protocol is not recommended for clock rates beyond
4 MHz. For clock rates beyond 4 MHz, V.35 interface is recommended.
This 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.