I have got an answer from the support team.
There is the same configuration under Edge Group section, and with the configuration Retryable Reason Codes feature worked with 408 Timeout.
What I am wondering is "When is the Retryable Reason Codes in External Trunks used?"
From the result of my testing in my lab environment,
-Only External Trunk -> did not work
-Only Edge Group -> did work
-Both External Trunk and Edge Group -> did work
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Tetsuro Fujisawa
TSUZUKI DENKI CO LTD
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Original Message:
Sent: 01-27-2022 01:24
From: Robert Wakefield-Carl
Subject: "Retryable Reason Codes" in external trunks can only accept SIP response codes from 500-599??
Open a ticket on this one. Yes, putting 408 in there should be the fix, but I am just guessing here - that code might be reserved for timeouts to allow for overflow routing to sip servers and trunks in the system. See if the carrier or SBC can convert that to a 508.
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Robert Wakefield-Carl
Avtex Solutions, LLC
Contact Center Innovation Architect
robertwc@avtex.com
https://www.Avtex.com
https://RobertWC.Blogspot.com
Original Message:
Sent: 01-26-2022 06:17
From: Tetsuro Fujisawa
Subject: "Retryable Reason Codes" in external trunks can only accept SIP response codes from 500-599??
Hi everyone,
I have a question about external trunks.
Does anyone know that the "Retryable Reason Codes" only works with 500-599??
I tested the movement of this feature in my lab environment, and this feature did not work with the response code 408 TimeOut.
Thank you,
Tetsuro
#SIP/VolP
#Telephony
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Tetsuro Fujisawa
TSUZUKI DENKI CO LTD
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