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. The rtrv-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.
Range:
1
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.

Range:
19000 - 50000
Default:
No change to the current value.
System Default:
50000
it19 (optional)

Timer 19—Supervision timer during MTP restart to avoid ping-pong of TFP, TFR1, and TRA messages.

Range:
67000 - 69000
Default:
No change to the current value
System Default:
67000
it20 (optional)

Timer 20—Overall MTP restart timer at the signaling point whose MTP restarts.

Range:
59000 - 61000
Default:
No change to the current value.
System Default:
59000
it21 (optional)

Timer 21—Overall MTP restart timer at a signaling point adjacent to one whose MTP restarts.

Range:
63000 - 65000
Default:
No change to the current value.
System Default:
63000
it22 (optional)

Timer 22—Waiting to repeat local inhibit test.

Range:
180000 - 360000
Default:
No change to the current value
System Default:
90000
it23 (optional)

Timer 23—Waiting to repeat remote inhibit test.

Range:
180000 - 360000
Default:
No change to the current value
System Default:
90000
t1 (optional)

Timer 1—Changeover delay. Also used as isolation timer for ITU MTP Restart.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t10 (optional)

Timer 10—Wait to repeat signaling route set test (SRST) message.

Range:
20000 - 90000
Default:
No change to the current value
System Default:
30000
t11 (optional)

Timer 11—Transfer restricted; in milliseconds.

Range:
1000 - 90000
Default:
No change to the current value System
System Default:
30000
t12 (optional)

Timer 12—Wait for uninhibit acknowledgment.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t13 (optional)

Timer 13—Wait for force uninhibit.

Range:
100 - 2000
Default:
No change to the current value.
System Default:
800
t14 (optional)

Timer 14—Wait for inhibit acknowledgment.

Range:
200 - 4000
Default:
No change to the current value
System Default:
2000
t15 (optional)

Timer 15—Wait for repeat route set congestion test (RSCT).

Range:
200 - 4000
Default:
No change to the current value
System Default:
3000
t16 (optional)

Timer 16—Wait for route set congestion test (RSCT) updates.

Range:
200 - 3000
Default:
No change to the current value
System Default:
1400
t17 (optional)

Timer 17—Delay to avoid oscillation of initial alignment failure; in milliseconds.

Range:
500 - 2000
Default:
No change to the current value
System Default:
800
t18 (optional)

Timer 18—Repeat transfer restricted (TFR) once by response method.

Range:
2000 - 20000
Default:
No change to the current value
System Default:
10000
t19 (optional)

Timer 19—Failed link craft referral timer.

Range:
30000 - 600000
Default:
No change to the current value.
System Default:
480000
t2 (optional)

Timer 2—Wait for changeover acknowledge (COA).

Range:
100 - 3000
Default:
No change to the current value
System Default:
1400
t20 (optional)

Timer 20—Repeat local inhibit test; in milliseconds.

Range:
90000 - 120000
Default:
No change to the current value
System Default:
90000
t21 (optional)

Timer 21—Repeat remote inhibit test; in milliseconds.

Range:
90000 - 120000
Default:
No change to the current value
System Default:
90000
t22 (optional)

Timer 22—Timer at restarting STP, waiting for signaling links to become available; in milliseconds.

Range:
10000 - 60000
Default:
No change to the current value.
System Default:
10000
t23 (optional)

Timer 23—Timer at restarting STP, started after T22, waiting to receive all TRA messages; in milliseconds.

Range:
9000 - 100000
Default:
No change to the current value.
System Default:
10000
t24 (optional)

Timer 24—Timer at restarting STP with transfer function, started after T23, waiting to broadcast all TRA messages.

Range:
9000 - 60000
Default:
No change to the current value.
System Default:
10000
t25 (optional)

Timer 25—Timer at adjacent STP and restarting STP, waiting for TRA message; may be started at level 2.

Range:
30000 - 35000
Default:
No change to the current value
System Default:
30000
t26 (optional)

Timer 26—Timer at restarting STP, waiting to repeat TRW message.

Range:
12000 - 15000
Default:
No change to the current value.
System Default:
12000
t28 (optional)

Timer 28—Timer at STP adjacent to restarting STP, waiting for TRW message.

Range:
3000 - 35000
Default:
No change to the current value
System Default:
3000
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.

Range:
60000 - 65000
Default:
No change to the current value
System Default:
60000
t3 (optional)

Timer 3—Time controlled diversion on changeback.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t30 (optional)

Timer 30—Timer to limit sending of TFPs/TFRs in response to an unexpected TRA or TRW.

Range:
30000 - 35000
Default:
No change to the current value
System Default:
30000
t31 (optional)

Timer 31—False link congestion detection.

Range:
10000 - 120000
Default:
No change to the current value.
System Default:
60000
t32 (optional)

Timer 32—Link oscillation timer – Procedure A.

Range:
1000 - 120000
Default:
No change to the current value.
System Default:
60000
t4 (optional)

Timer 4—Wait for changeback acknowledge (CBA) #1.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t5 (optional)

Timer 5—Wait for changeback acknowledge (CBA) #2.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t6 (optional)

Timer 6—Controlled reroute.

Range:
100 - 2000
Default:
No change to the current value
System Default:
800
t7 (optional)

Timer 7—Signaling data link connection (SDLC) acknowledge.

Range:
100 - 3000
Default:
No change to the current value.
System Default:
1000
t8 (optional)

Timer 8—Transfer prohibited (TFP) inhibit.

Range:
500 - 2000
Default:
No change to the current value.
System Default:
800
tc (optional)

Timer C- Release transfer congestion status timer in J7 network.

Range:
3000 - 60000
Default:
No change to the current value.
System Default:
3000

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 
;

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