Hi Brandon
Apologies if you have provided this but do you have a PCAP of the INVITE / 400 Bad Request rather than the Pastebin of the INVITE
The last time I had this was because of a missing /r/n on the SDP granted it was not with teams but still difficult to track down.
Also, what is the MTU Size, have you checked to see if the is causing packet fragmentation and manifesting in a Bad Request.
Are there any clues in the Teams - Call Analytics.
Regards
Lewis
-----Original Message----- From: sr-users-request@lists.kamailio.org sr-users-request@lists.kamailio.org Sent: 29 December 2022 20:17 To: sr-users@lists.kamailio.org Subject: sr-users Digest, Vol 211, Issue 67
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Today's Topics:
1. Re: Direct Routing, SIP, INVITE TO TEAMS (400 BAD REQUEST) (Brandon Armstead) 2. Re: Direct Routing, SIP, INVITE TO TEAMS (400 BAD REQUEST) (Brandon Armstead)
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Message: 1 Date: Thu, 29 Dec 2022 12:15:16 -0800 From: Brandon Armstead brandon@cryy.com Subject: [SR-Users] Re: Direct Routing, SIP, INVITE TO TEAMS (400 BAD REQUEST) To: Henning Westerholt hw@gilawa.com Cc: "Kamailio (SER) - Users Mailing List" sr-users@lists.kamailio.org Message-ID: CABAX3EoF+hfruLiV2Nh_g117_q8diaKxVEyp5hMFO=wyKbQidQ@mail.gmail.com Content-Type: multipart/alternative; boundary="0000000000005692d905f0fd2538"
Henning,
There was no reply (reason) available in my case.
- Brandon
On Thu, Dec 29, 2022 at 11:48 AM Henning Westerholt hw@gilawa.com wrote:
Hello,
as mentioned before, have a look to the 400 reply reason phrase. This was done quite good from their side, better than many other vendors.
Usually, Teams is not too bad if you are using a defined infrastructure that do not introduce too many variables. We are usually using a B2BUA in our customer projects for that purpose.
Cheers,
Henning
--
Henning Westerholt - https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fskal atan.de%2Fblog%2F&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk% 7Ce1670c8a21444edf0ed408dae9f91fac%7C97c26f550a7a4661bd8f7b43b50d3f2b% 7C0%7C0%7C638079553431377130%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdat a=QU%2BzOgPdbmRYh51a9PvptIvVjnTZrGxT8z1G7b2RRGQ%3D&reserved=0
Kamailio services - https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgila wa.com%2F&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Ce1670c 8a21444edf0ed408dae9f91fac%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7C0% 7C638079553431377130%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQI joiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=PuDqkZ QCj2IlxvRsLQGoKFv19K3uVE5RBxvcPKPODwQ%3D&reserved=0
*From:* Brandon Armstead brandon@cryy.com *Sent:* Thursday, December 29, 2022 7:52 PM *To:* Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org *Subject:* [SR-Users] Re: Direct Routing, SIP, INVITE TO TEAMS (400 BAD REQUEST)
Alex & Kaufman,
Appreciate the feedback. The pastebin is one example of about 1000+ iterations literally of changes. So I'm finally reaching out :). I haven't tested the socket attribute in record-route change, I will try this now. As for the angle brackets I've tried with and without, etc (already) to no effect. The SDP unknown media type seems to be a Poly thing, so I *want* to rule this out as its not in my other SDP's and still receive 400 bad request.
One more iteration here we go... please feel free to let me know if you have any other thoughts on the matter :).
Thanks!
- Brandon
On Thu, Dec 29, 2022 at 8:08 AM Alex Balashov abalashov@evaristesys.com wrote:
Yeah, the grammar says that rr-params are just generic-params, in which case it's not. I didn't see that -- nicely spotted!
I think that may be the basis of the 400 Bad Request. I'd be shocked if it weren't.
The broken clock of "Microsoft SIP" can still be right twice a day.
On Dec 29, 2022, at 10:31 AM, Kaufman bkaufman@bcmone.com wrote:
In your top Record-Route you have:
socket=;
Not sure if that is legal.
Kaufman
-----Original Message----- From: Alex Balashov abalashov@evaristesys.com Sent: Thursday, December 29, 2022 9:02 AM To: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: [SR-Users] Re: Direct Routing, SIP, INVITE TO TEAMS (400 BAD
REQUEST)
Sorry to hear you're having to interoperate with Teams. It's a unique
form of sadism I wouldn't wish upon anyone.
A few theories:
- Microsoft doesn't like the "bare" Contact header-value here:
Contact:
sip:+MY_FROM_PHONE_NUMBER_HERE@MY_FQDN_WAS_HERE:5061;transport=tls
Unlike the careted one right above:
P-Asserted-Identity: sip:+MY_FROM_PHONE_NUMBER_HERE@MY_FQDN_WAS_HERE
A bare URI absent other header-params is of course completely legal, but
I'm really trying to get inside the imaginary world of antisocial "Microsoft SIP" here.
- Could it be that antisocial "Microsoft SIP" sends 400 as a way of
objecting to something in the SDP, e.g. where a non-demented SIP stack would send "488 Not Acceptable Here" or "415 Unsupported Media Type"?
I know you've said you tried multiple clients to rule that out, but I
wonder if the thing it's objecting to hasn't been ruled out that way.
- I saw this media line in the SDP:
m=application 41356 <unknown media type>
What's that?
-- Alex
On Dec 29, 2022, at 9:51 AM, Brandon Armstead brandon@cryy.com wrote:
Outbound calls from my SBC into Teams (Polycom -> SBC -> Teams) always
result in a 400 BAD REQUEST.
Example invite below: https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fn am11.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%25 2Fpast&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Ce1670c 8a21444edf0ed408dae9f91fac%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7 C0%7C638079553431377130%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sda ta=5v20CvNnmdiHwfWMBX6tgjMlE1i2aKpFgTnuVFfpyl0%3D&reserved=0 ebin.com%2FF1G1Ce59&data=05%7C01%7Cbkaufman%40bcmone.com%7C55672dbf 739 a4ff447f008dae9b0c9b2%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C 638 079242759152531%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjo iV2 luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Cbff6B4g Nr8 A9zs89smJ129y8IyNM9%2B3zVkGhlzpa54%3D&reserved=0 I've taken care to make sure numbers are all E.164 format in
From/To/Contact. I've also taken care to make sure that FQDN is used in Contact and Record-Route header.
I've tried many different variations and have followed the SIP
information here:
https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fn am11.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%25 2Flear&data=05%7C01%7Clewis.hutchinson%40missionlabs.co.uk%7Ce1670c 8a21444edf0ed408dae9f91fac%7C97c26f550a7a4661bd8f7b43b50d3f2b%7C0%7 C0%7C638079553431377130%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA iLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sda ta=ELk0UD1Pleq%2FG9j1%2BT18tiuFe0yjflimR9ztnW%2F7oPM%3D&reserved=0 n.microsoft.com%2Fen-us%2Fmicrosoftteams%2Fdirect-routing-protocols -si p&data=05%7C01%7Cbkaufman%40bcmone.com%7C55672dbf739a4ff447f008dae9 b0c 9b2%7Cafc1818e7b6848568913201b9396c4fc%7C1%7C0%7C638079242759152531 %7C Unknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6I k1h aWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=GO26A9FOOoS42yMCWPPGo5PkKo 75c kjSJSkjAeYRsU0%3D&reserved=0 I've also tried several different clients (Bria, Polycom CCX 600, Grandstream, etc) to see if maybe it was
something in the SDP or otherwise causing an issue.
SIP Transport is TLS, RTP is SRTP I might also add that OPTION pings are active and Direct Routing
Endpoint is active, so this is successful. I also am able to receive calls FROM teams to my IP phone(s) without issue. It is only when I try and call INTO teams (INVITE -> Microsoft Teams) that I always receive a 400 BAD REQUEST to my INVITE.
Any help is appreciated, thank you!
- Brandon
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