Alcatel Omni Switch/Router, User Manual

Page: 106 / 1100

WAN Modules
Page 3-36
WSX-BRI-SC
The
ISDN Basic Rate Interface WAN
Switching Module (
WSX-BRI-SC
) supports either one (1)
serial port and one (1)
BRI
port or two (2) serial ports and two (2)
BRI
ports. The version with
1 serial port and 1
BRI
port is referred to as the
WSX-BRI-SC-1W
; the version with 2 serial ports
and 2
BRI
ports is referred to as the
WSX-BRI-SC-2W. See
WSX-BRI-SC Technical Specifications
on page 3-37
for more information.
The serial port on a
WSX-BRI-SC
module is essentially the same as the serial ports found on
the
WSX-SC
module. A
WSX-BRI-SC
serial port can detect, and configure itself, for any of five
serial cable types (
RS-232
,
V.35
,
X.21
,
RS-530
, and
RS-449
). A
WSX-BRI-SC
serial port is normally
considered a physical
DTE
device, but it can be turned into a physical
DCE
device—for speed
or clocking purposes—by simply plugging in a
DCE
cable. The
WSX-BRI-SC
internally senses
whether a
DCE
or
DTE
cable is connected and configures itself appropriately.
The
BRI
port on the
WSX-BRI-SC
board can be configured as either a “U” or an “S/T” type of
interface (the board is shipped set to “U”). Either type of interface supports two “B” channels
operating at 56/64 Kbps and one “D” channel operating at 16 Kbps.
Software running in the switch allows you to configure the operation of the Point-to-Point
Protocol (
PPP
) over the serial port or the BRI port. The serial port can also support the Frame
Relay protocol. The software commands used to configure
PPP
are described in Chapter 30,
“Point-to-Point Protocol.” The software commands used to configure Frame Relay are
described in Chapter 29, “Managing Frame Relay.” The software commands used to configure
the WAN “links” that support
PPP
connections are described in Chapter 31, “WAN Links.”
Finally, the software commands used to manage the ISDN ports are described in Chapter 32,
“Managing ISDN Ports.”
With the optional
HRE-X
you can increase routing performance to 1.5 million packets per
second per module and up to 12 Mpps in a fully-loaded 9-slot chassis.