Asterisk 20 . incoming calls failing to reach the queue

Hi all,

my FreePBX 16 with Asterisk 20 is experiencing a strange issue on receiving incoming calls directed queues. When tracing SIP messages, PBX tears down the call with BYE message “x-asterisk-hangupcause 16", Unrecognized SIP headers. Same calls are successfully received when routed to extension or ring group, but entering into queues breaks the call down. Older Asterisk versions, such as v16 did not thave the same issue. Driver is chan_sip. Please advise. Thanks in advance,

Call logs in the URL:
https://pastebin.freepbx.org/view/4b9fe853

Call looks to be reaching a Queue (301)
Can you give us a little background about how the queue is configured?
Do you have agents inside that queue?

Hi Sergio,

call does indeed reach the queue 301. Queue has dynamic agents logged in:
301 has 0 calls (max unlimited) in ‘rrmemory’ strategy (0s holdtime, 0s talktime), W:5, C:0, A:0, SL:0.0%, SL2:0.0% within 60s
Members:
Agent 3013 (Local/3013@from-queue/n from hint:3013@ext-local) (ringinuse disabled) (dynamic) (Not in use) has taken no calls yet (login was 98405 secs ago)
Agent 3011 (Local/3011@from-queue/n from hint:3011@ext-local) (ringinuse disabled) (dynamic) (Not in use) has taken no calls yet (login was 98405 secs ago)
Agent 3009 (Local/3009@from-queue/n from hint:3009@ext-local) (ringinuse disabled) (dynamic) (Not in use) has taken 1 calls (last was 90288 secs ago) (login was 90550 secs ago)
Agent 3012 (Local/3012@from-queue/n from hint:3012@ext-local) (ringinuse disabled) (dynamic) (Not in use) has taken no calls yet (login was 98405 secs ago)
No Callers

Hi David,

Please advise on how to collect full log.
I have a PCAP file which can be used for analysis. It can be seen that PBX sends BYE due to Unrecognized Headers, and I will upload it here.

Please see this pcap file.

Hi David,

it seems OK now. Seems like disabling Sangomaconnect module when troubleshooting another ticket also contributed to resolution of this one. Thanks alot, I appreciate your help. I will bemonitoring the situation, and provide feedback if anything outstanding occurrs regarding this.

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