Direct Routing SBC Teams error code 503

Question

All can be well, then suddenly we are not able to make external calls via Teams - we have direct routing configured Ribbon SBC Lite

the error code which we see is 503? Anyone else have this experience - recommendations for investigation would be appreciated

andresgorzelany · Answer

HelloMaybe the first thing I would check would be SBC log files to check if something is there when trying the callhttps://support.sonus.net/display/UXDOC81/Working+with+LoggingWhat about inbound calls?

dawnbluck · Answer

The logs show 503 error - inbound not affected

andresgorzelany · Answer

Can you share the 503 error? probably it has more details
503 can have multiple causes

Here you have more details about that

https://support.sonus.net/display/UXDOC61/Translating+SIP+Responses+in+SIP-SIP+Calls+Using+the+Pass-thru+Peer+SIP+Response+Code

bowen0102 · Answer

dawnbluck&nbsp;Yeah&nbsp; I am facing the same issues. Logs shows call stop right before trying to access transformation table. Saying something like&nbsp;quality requirements not met.

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Direct Routing SBC Teams error code 503

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