Forum Discussion

Copper Contributor

Nov 10, 2020

Solved

Teams Direct routing media bypass mode ICE controlled

I've a strange scenario when I enabled media bypass on my SBC and thought to check with everyone here first before contacting MS. Outbound calls from Teams to PSTN works with ICE being CONTROLLIN...

afouad5
Dec 10, 2020
AlainCPlease check https://tools.ietf.org/html/rfc5245#page-75

"ice-lite" is a session-level attribute only, and indicates that an agent is a lite implementation.
In your trace you have it within the media part , once you have it in the right position before m=audio
you will get the correct controlled state and nomination.

afouad5

Copper Contributor

Dec 08, 2020

Hi AlainC
What is your SBC model ?

AlainC

Copper Contributor

Dec 10, 2020

afouad5 We are doing a POC with our own SBC to check interoperability.

As you had the same issue and as it seems to be fixed now, what would be nice is to have a sip trace / debug logs of an outbound successfull call. Bellow the configuration of our sbc in O365, maybe is there something wrong (we tried to enable BypassMode "Always", but no effect) ? :

Thanks

afouad5
Copper Contributor
Dec 10, 2020
AlainCPlease check https://tools.ietf.org/html/rfc5245#page-75

"ice-lite" is a session-level attribute only, and indicates that an agent is a lite implementation.
In your trace you have it within the media part , once you have it in the right position before m=audio
you will get the correct controlled state and nomination.
- AlainC
  Copper Contributor
  Dec 11, 2020
  afouad5 , many thanks, it works now 🙂
  - afouad5
    Copper Contributor
    Dec 11, 2020
    Perfect 🙂