VEGA400 Call Leg/Transaction Does Not Exist

Hi All!

I am currently facing issues with microsoft office 365 verification. It seems the microsoft system does not recognize the # when pressed. I tried to capture the logs for the SIP, please see below;

SIP m:2150091 0205 00036<-- UA RX — From UDP(5):10.30.13.253:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.15.21.1:5060;branch=z9hG4bK-vega1-1DA22A2C74DA-000A-0001-69BE-A4A1A422;received=10.15.21.1;rport=5060
From: “18553308653” sip:[email protected];tag=007F-2B79-96D5E7D2
To: sip:[email protected];tag=1c546815098
Call-ID: [email protected]
CSeq: 457843627 INVITE
Contact: sip:[email protected]:5060
Supported: em,timer,replaces,path,resource-priority
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE
Server: Nuera MP-11x/v.6.60A.309.001
Content-Type: application/sdp
Content-Length: 280

v=0
o=AudiocodesGW 546863933 546863932 IN IP4 10.30.13.253
s=Phone-Call
c=IN IP4 10.30.13.253
t=0 0
m=audio 6020 RTP/AVP 18 101
c=IN IP4 10.30.13.253
a=sendrecv
a=ptime:80
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15,16
SIP m:2150099 0008 00037— UA TX --> To UDP(5):10.30.13.253:5060
ACK sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 10.15.21.1:5060;rport;branch=z9hG4bK27FE69DDCBA59D9D997073DB32E7522C457843627
From: “18553308653” sip:[email protected];tag=007F-2B79-96D5E7D2
To: sip:[email protected];tag=1c546815098
Max-Forwards: 70
Call-ID: [email protected]
CSeq: 457843627 ACK
Contact: sip:[email protected]:5060
Content-Length: 0

SIP m:2170371 0007 00062— UA TX --> To UDP(5):10.30.13.253:5060
SIP/2.0 481 Call Leg/Transaction Does Not Exist
Via: SIP/2.0/UDP 10.30.13.253:5060;branch=z9hG4bKac600638786
From: sip:[email protected];tag=1c546815098
To: “18553308653” sip:[email protected];tag=007F-2B79-96D5E7D2
Call-ID: [email protected]
CSeq: 1 BYE
Contact: sip:[email protected]:5060
Content-Length: 0

It says Call Leg/Transaction Does Not Exist. Looking at the branch, should it be the same?

Sorry, I am just new in VoIP.

Very thankful for any inputs.

Regards,
Joseph

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