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A user has a problem calling a specific PSTN number. An engineer investigates the issue on a Cisco UCM server and a Cisco Unified Border Element router, and discovers that the ITSP rejects the outbound SIP INVITE with a 422 Session Timer Too Small SIP message. What must the engineer do to resolve the issue?
Suggested Answer: C
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26 comments · newest first
AL
Aliza
6 months ago
D could work, but I feel like the issue is more about the current settings being too high.
TA
Tambra
6 months ago
C seems right. Increasing the Min-SE might align with the ITSP requirements.
CE
Celeste
6 months ago
I agree, but what about A? Decreasing the SIP Session Expires Timer could help too.
VE
Verona
6 months ago
I think it's B. Lowering the Min-SE should fix the rejection.
TR
Truman
6 months ago
Agreed, B is the best option here.
MY
My
6 months ago
No way, it has to be C! Increasing the timer won't fix the rejection.
CO
Cory
7 months ago
Wait, isn't it surprising that a 422 error is caused by session timers?
JO
Jolanda
7 months ago
I think A could work too, but B seems more direct.
HA
Han
7 months ago
Definitely B, you need to decrease the Min-SE timer.
KA
Kanisha
7 months ago
Trick question! The answer is actually to unplug the router and plug it back in. Works every time.
VI
Vincenza
7 months ago
Hmm, this one's a real head-scratcher. I'm going with C) just to see what happens.
IS
Isidra
8 months ago
B) Decrease the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer. Seems like the logical fix to me.
CR
Crista
8 months ago
D) Increase the SIP Session Expires Timer service parameter in Cisco UCM. Gotta love those Cisco solutions!
LA
Laquanda
8 months ago
C) Increase the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer. That's the way to go!
PA
Paris
8 months ago
I vaguely remember that the SIP Session Expires Timer in Cisco UCM affects how long the session is valid. Maybe we should look at option A or D?
ZO
Zoila
9 months ago
If the ITSP is rejecting with a 422 error, it seems like we need to increase the timer. I feel like option D could be the right choice.
AR
Art
9 months ago
I think we had a similar question where we had to adjust the Min-SE timer. It might be related to option B or C, but I can't recall the exact details.
DA
Daniela
9 months ago
I remember something about session timers from our last practice exam, but I'm not sure if we should increase or decrease them in this case.
DO
Dottie
9 months ago
Yeah, I agree with Sarah. Increasing the Min-SE timer on the border element should give the ITSP the longer session timer it's looking for and resolve the issue.
GL
Gladis
9 months ago
Based on the error message, it seems like the ITSP is expecting a longer session timer than what's currently configured. So I'm thinking option C, increasing the Min-SE timer on the Cisco Unified Border Element, is likely the right approach.
LA
Lanie
10 months ago
I'm a bit confused by the different timers mentioned - the SIP Session Expires Timer and the Min-SE SIP header timer. I'll need to make sure I understand the difference between them.
HE
Herminia
10 months ago
Okay, the key here is understanding the 422 Session Timer Too Small error message. I think I need to focus on adjusting the timers to resolve this.
HY
Hyman
10 months ago
Hmm, this seems like a tricky one. I'll need to carefully review the options and think through the implications of each.
RA
Rashad
4 months ago
I’m leaning towards option D. Increasing the SIP Session Expires Timer could resolve the rejection.
MA
Maybelle
4 months ago
But what if we need to increase it instead? Option C might be the way to go.
RO
Roxane
5 months ago
I think option B makes sense. Lowering the Min-SE timer could help.