Configuring Fdl; Invert Data On The T1/E1 Interface - Cisco ASR 1000 Configuration Manual

Chapter 15 Configuring the 8-Port Channelized T1/E1 SPA

Configuring FDL

Facility Data Link (FDL) is a 4-kbps channel provided by the Extended Super Frame (ESF) T1 framing
format. The FDL performs outside the payload capacity and allows you to check error statistics on
terminating equipment without intrusion.
Command
Router# configure terminal
Router(config)# controller t1 slot/subslot/port
Router(config-controller)# fdl [ansi | att | both]
Verifying FDL
Use the show controllers t1 command to verify the FDL setting:
Router# show controllers t1 0/2/0
T1 0/2/0 is up.
Applique type is SPA-8XCHT1/E1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (750 seconds elapsed):

Invert Data on the T1/E1 Interface

If the interface on the 8-Port Channelized T1/E1 SPA is used to drive a dedicated T1 line that does not
have B8ZS encoding, you must invert the data stream on the connecting CSU/DSU or on the interface.
Be careful not to invert data on both the CSU/DSU and the interface, as two data inversions will cancel
each other out. To invert data on a T1/E1 interface, use the following commands:
OL-14127-08
LOS State:Clear
4000 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
0 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
Purpose
Enters global configuration mode.
Selects the controller to configure and enters
controller configuration mode.
slot/subslot/port—Specifies the location of the
•
controller. See the
Address on a SPA" section on page
If the framing format was configured for esf,
configures the format used for Facility Data Link
(FDL).
ansi—Specifies the ANSI T1.403 standard.
•
att—Specifies the AT&T TR54016 standard.
•
both—Specifies support for both AT&T
•
technical reference 54016 and ANSI T1.403
for ESF FDL exchange support.
LOF State:Clear
Configuration Tasks
"Specifying the Interface
15-6.
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