17-15
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 17 Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs
Configuration Tasks
Configuring the Trace Trail Buffer
Configure Trace Trail Buffer (TTB) to send messages to the remote device. The TTB messages check
for the continued presence of the transmitter. To configure TTB, use the following commands:
Verifying TTB Settings
Use the show controllers serial command to display the TTB settings for the interface:
Router# show controllers serial 2/0/0
Serial2/0/0 -
Framing is c-bit, Clock Source is Line
Bandwidth limit is 44210, DSU mode 0, Cable length is 10
rx FEBE since last clear counter 2, since reset 0
Data in current interval (546 seconds elapsed):
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation
0 P-bit Err Secs, 0 P-bit Sev Err Secs
0 Sev Err Framing Secs, 0 Unavailable Secs
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
Data in Interval 1:
0 Line Code Violations, 0 P-bit Coding Violation
0 C-bit Coding Violation
0 P-bit Err Secs, 0 P-bit Sev Err Secs
0 Sev Err Framing Secs, 0 Unavailable Secs
0 Line Errored Secs, 0 C-bit Errored Secs, 0 C-bit Sev Err Secs
No alarms detected.
TTB transmission is disabled
TTB Rx: country: us soperator: s snode: sn rnode: rn x: x serial: 1
Command Purpose
Router# configure terminal Enters global configuration mode.
Router(config)# interface serial slot/subslot/port Selects the interface to configure and enters
interface configuration mode.
• slot/subslot/port—Specifies the location of the
interface. See the
“Specifying the Interface
Address on a SPA” section on page 17-5.
Router(config-if)# ttb {country | rnode | serial |
snode | soperator | x} string
Sends a Trace Trail Buffer message in E3 g.832
framing mode.
• country—Two character country code.
• rnode—Receive node code.
• serial—M.1400 serial.
• snode—Sending location/Node ID code.
• soperator—Sending operator code (must be
numeric).
• x—X0.
• string—TTB message.