SOLVED

Call issue

%3CLINGO-SUB%20id%3D%22lingo-sub-1547102%22%20slang%3D%22en-US%22%3ECall%20issue%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1547102%22%20slang%3D%22en-US%22%3E%3CP%3EHello.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20try%20to%20route%20call%20from%20Teams%20to%20Cisco%20TelePresence.%20Route%20is%20fine.%20In%20call%20I%20reach%20Cisco%20TelePresence%20correctly%2C%20I%20hear%20welcome%20message%20but%20after%20that%20call%20is%20disconnected.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EI%20see%20that%20issue%20on%20SBC%3A%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E05%3A29%3A31.000%20----%20Incoming%20SIP%20Message%20from%2052.114.132.46%3A9728%20to%20SIPInterface%20%231%20(Teams)%20TLS%20TO(%23160)%20SocketID(374022)%20----%20%5BTime%3A27-07%4005%3A29%3A31.137%5D%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ESIP%2F2.0%20488%20Not%20Acceptable%20Here%3C%2FP%3E%3CP%3EFROM%3A%20%26lt%3B%26gt%3B%3Btag%3D39559345~43deca70-8680-4d84-9d07-93c553f67090-36911004%3C%2FP%3E%3CP%3ETO%3A%20%22Sabat%2C%20Michal%22%26lt%3B%26gt%3B%3Btag%3D6e609738eadb4f1ba2e599116fa0cb6a%3C%2FP%3E%3CP%3ECSEQ%3A%203%20INVITE%3C%2FP%3E%3CP%3ECALL-ID%3A%2085391d0fad8054ff8c02e5e71ec57b92%3C%2FP%3E%3CP%3EVIA%3A%20SIP%2F2.0%2FTLS%20sxsbc1.qg.com%3A5061%3Bbranch%3Dz9hG4bKac1774153124%3C%2FP%3E%3CP%3EREASON%3A%20Q.850%3Bcause%3D79%3Btext%3D%226ce84b5c-aa0a-4b12-ba82-5c662a807926%3BInternalDiagCode%3A%20InvalidNumberOfMedia%2C%20InternalErrorPhrase%3A%20Incorrect%20number%20of%20media%20streams%20in%20SDP%20offer%22%3C%2FP%3E%3CP%3ECONTACT%3A%20%26lt%3B443%26gt%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CP%3E%3C%2FP%3E%3CP%3ECONTENT-LENGTH%3A%200%3C%2FP%3E%3CP%3EALLOW%3A%20INVITE%2CACK%2COPTIONS%2CCANCEL%2CBYE%2CNOTIFY%3C%2FP%3E%3CP%3ESERVER%3A%20Microsoft.PSTNHub.SIPProxy%20v.2020.7.17.8%20i.USEA.8%3C%2FP%3E%3CLINGO-LABS%20id%3D%22lingo-labs-1547102%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3ETeams%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1552662%22%20slang%3D%22en-US%22%3ERe%3A%20Call%20issue%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1552662%22%20slang%3D%22en-US%22%3E%3CP%3EAny%20idea%3F%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1555005%22%20slang%3D%22en-US%22%3ERe%3A%20Call%20issue%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1555005%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F343012%22%20target%3D%22_blank%22%3E%40msabat%3C%2FA%3E%26nbsp%3BI%20found%20that%20in%20logs%3A%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ETeams%20proxy%2052.x.x.x%20rejects%20the%20call%20with%20488%20as%20shown%20below%20from%20the%20trace.%20Why%20Teams%20is%20sending%20a%20488%3F%20I%20do%20not%20see%20an%20issue%20with%20the%20coders%20that%20are%20offered%2C%20DTMF%2C%20or%20other%20common%20reason%20we%20may%20see%20a%20rejection%20from%20Microsoft.%3C%2FP%3E%3C%2FLINGO-BODY%3E
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Contributor

Hello.

 

I try to route call from Teams to Cisco TelePresence. Route is fine. In call I reach Cisco TelePresence correctly, I hear welcome message but after that call is disconnected.

 

I see that issue on SBC:

 

05:29:31.000 ---- Incoming SIP Message from 52.114.132.46:9728 to SIPInterface #1 (Teams) TLS TO(#160) SocketID(374022) ---- [Time:27-07@05:29:31.137]

 

SIP/2.0 488 Not Acceptable Here

FROM: <sip:+19995550118@sxsbc1.qg.com:5061;user=phone>;tag=39559345~43deca70-8680-4d84-9d07-93c553f67090-36911004

TO: "Sabat, Michal"<sip:+14145668769@sip.pstnhub.microsoft.com:5061;user=phone>;tag=6e609738eadb4f1ba2e599116fa0cb6a

CSEQ: 3 INVITE

CALL-ID: 85391d0fad8054ff8c02e5e71ec57b92

VIA: SIP/2.0/TLS sxsbc1.qg.com:5061;branch=z9hG4bKac1774153124

REASON: Q.850;cause=79;text="6ce84b5c-aa0a-4b12-ba82-5c662a807926;InternalDiagCode: InvalidNumberOfMedia, InternalErrorPhrase: Incorrect number of media streams in SDP offer"

CONTACT: <sip:api-du-a-euno.pstnhub.microsoft.com:443;x-i=6ce84b5c-aa0a-4b12-ba82-5c662a807926;x-c=85391d0fad8054ff8c02e5e71ec57b92/d/8/4e34278e2ec843bdae4c1e43ebfbeab7>

CONTENT-LENGTH: 0

ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY

SERVER: Microsoft.PSTNHub.SIPProxy v.2020.7.17.8 i.USEA.8

2 Replies
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Any idea?

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Best Response confirmed by ThereseSolimeno (Microsoft)
Solution

@msabat I found that in logs:

 

Teams proxy 52.x.x.x rejects the call with 488 as shown below from the trace. Why Teams is sending a 488? I do not see an issue with the coders that are offered, DTMF, or other common reason we may see a rejection from Microsoft.