4.89 chg-l3t
Use this command to change the SS7 MTP level 3 timers. The SS7 MTP level 3 timers are organized in a timer set of 21 values each. Only one timer set is administered by this command. Each linkset is associated with the SS7 MTP level 3 Timer set. The linkset and timer set association is assigned with the link administration commands.
Parameters
Note:
All timer values are entered in milliseconds. Thertrv-l3t
command displays output in seconds.
Note:
All it(X) parameters can be specified for ITU networks only. All t(x) parameters can be specified for ANSI or ITU networks. Tc parameter can be specified for J7 (Japan ITU-N) networks only.- l3tset (mandatory)
- Timer set table. Only one timer set table exists. All SS7 signaling links use the SS7 MTP level 3 timer set table.
- it18 (optional)
-
Timer 18—Timer within a signaling point whose MTP restarts to supervise the receipt of routing information and the activation of the link and link set.
- it19 (optional)
-
Timer 19—Supervision timer during MTP restart to avoid ping-pong of TFP, TFR1, and TRA messages.
- it21 (optional)
-
Timer 21—Overall MTP restart timer at a signaling point adjacent to one whose MTP restarts.
- t22 (optional)
-
Timer 22—Timer at restarting STP, waiting for signaling links to become available; in milliseconds.
- t23 (optional)
-
Timer 23—Timer at restarting STP, started after T22, waiting to receive all TRA messages; in milliseconds.
- t24 (optional)
-
Timer 24—Timer at restarting STP with transfer function, started after T23, waiting to broadcast all TRA messages.
- t25 (optional)
-
Timer 25—Timer at adjacent STP and restarting STP, waiting for TRA message; may be started at level 2.
- t29 (optional)
-
Timer 29—Timer started when a TRA is sent in response to an unexpected TRA or TRW; also, started when traffic resumed without receipt of TRA.
- t30 (optional)
-
Timer 30—Timer to limit sending of TFPs/TFRs in response to an unexpected TRA or TRW.
Example
chg-l3t:l3tset=1:t1=800
chg-l3t:l3tset=1:t5=800:t6=800:t32=70000
Dependencies
The minimum parameter requirement is the table number and at least one timer specified.
Do not specify T20 and IT22 pairs of timers together because one value overrides the other.
Do not specify T21 and IT23 pairs of timers together because one value overrides the other.
The Level 3 timer table must be accessible.
The STP options table must be accessible.
Notes
The command line allows 157 characters. Some SS7 MTP level 3 timer changes may exceed this limit. Multiple entries of this command may be required in such cases.
Timer 9 is not currently supported in the SS7 protocol, and has been omitted from this manual. The command will support this timer when it has been defined in the protocol.
The default values are within the Telcordia recommended ranges.
tc timer is only supported in J7 network.
Output
chg-l3t:l3tset=1:t1=800
rlghncxa03w 04-01-07 08:40:50 EST EAGLE 31.3.0
CHG-L3T: MASP A - COMPLTD
;