SIP headers and found no issues. Also, when i use the same called number and make the calls through the same provider it works from my end with 200 OK. its really interesting and seems to be some issues with the headers.

I am using openser and following are the logs. sorry - its too long, but i need someones help to figure out whats going on really.

Also, following is the definition for the ips and telephone numbers.

FROM number - 17592034561
TO number - 19846572302
customer signaling ip-addr - 23.21.76.23
customer media ip-addr - 231.43.25.1
supplier media ip-addr - 43.25.32.85
supplier signaling ip-addr - 13.45.213.245
my signaling ip-addr - 123.123.1.234
---------------------------------------------------------------------
logs as below;

Y#HE&      _ d   E pl@ 7 ! @ V)ÇèNÃ Ä Ä |MàINVITE sip:+17592034561@123.123.1.234 SIP/2.0
Record-Route: <sip:23.21.76.23;lr;ftag=5d411c09;did=3b7.c57bab42>
To: <sip:+17592034561@23.21.76.23>
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Contact: <sip:+19846572302@43.25.32.85:8394>
Max-Forwards: 69
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO
Content-Type: application/sdp
User-Agent: eyeBeam release 3007n stamp 17816
Authorization: Digest username="19846572302",realm="23.21.76.23",nonce="48235aef53d38bbdccb25be97f6ac3599ce752eb",uri="sip:+17592034561@23.21.76.23",response="2993367e31be586485909086d44a328d",algorithm=MD5
Content-Length: 270

v=0
o=- 10556151 10556316 IN IP4 43.25.32.85
s=eyeBeam
c=IN IP4 231.43.25.1
t=0 0
m=audio 54864 RTP/AVP 18 101
a=alt:1 1 : 7DBA1F5A 00000092 10.0.0.1 8360
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=sendrecv
a=direction:active
a=nortpproxy:yes
ÄY#H¯' ¨ ¨    0HŒ% E ˜èÌ@ @ £ ÇèNÃ@ V) Ä Ä „¯ SIP/2.0 100 Trying
To: <sip:+17592034561@23.21.76.23>
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Server: OpenSER (1.2.2-notls (i386/linux))
Content-Length: 0

ÄY#H ; ® ®    0HŒ% E žèÍ@ @ ¢ÿÇèNÃ@ V) Ä Ä Š¯
SIP/2.0 100 Giving a try
To: <sip:+17592034561@23.21.76.23>
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Server: OpenSER (1.2.2-notls (i386/linux))
Content-Length: 0

ÄY#H‹; M M    0HŒ% E =èÎ@ @ G;ÇèNÃ@œ®N Ä Ä )
ÑINVITE sip:17592034561@13.45.213.245 SIP/2.0
Record-Route: <sip:123.123.1.234;lr=on;ftag=5d411c09;osp-o=t5198095097179410177_s23.21.76.23_a1210276292_c1>
Record-Route: <sip:23.21.76.23;lr;ftag=5d411c09;did=3b7.c57bab42>
To: <sip:+17592034561@23.21.76.23>
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
Via: SIP/2.0/UDP 123.123.1.234;branch=z9hG4bKa52d.b2b867d1.0
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Contact: <sip:+19846572302@43.25.32.85:8394>
Max-Forwards: 68
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO
Content-Type: application/sdp
User-Agent: eyeBeam release 3007n stamp 17816
Authorization: Digest username="19846572302",realm="23.21.76.23",nonce="48235aef53d38bbdccb25be97f6ac3599ce752eb",uri="sip:+17592034561@23.21.76.23",response="2993367e31be586485909086d44a328d",algorithm=MD5
Content-Length: 270

v=0
o=- 10556151 10556316 IN IP4 43.25.32.85
s=eyeBeam
c=IN IP4 231.43.25.1
t=0 0
m=audio 54864 RTP/AVP 18 101
a=alt:1 1 : 7DBA1F5A 00000092 10.0.0.1 8360
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=sendrecv
a=direction:active
a=nortpproxy:yes
ÄY#HÖº Ê Ê      _ d   E º** 2 Ws@œ®NÇèNÃ Ä Ä ¦ SIP/2.0 100 Trying
Via: SIP/2.0/UDP 123.123.1.234;branch=z9hG4bKa52d.b2b867d1.0
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
To: <sip:+17592034561@23.21.76.23>;tag=gK0cf56d6a
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Content-Length: 0

ÄY#HY…
Ö Ö      _ d   E Æ+ 2 Vƒ@œ®NÇèNÃ Ä Ä ² SIP/2.0 484 Address Incomplete
Via: SIP/2.0/UDP 123.123.1.234;branch=z9hG4bKa52d.b2b867d1.0
Via: SIP/2.0/UDP 23.21.76.23;branch=z9hG4bKa52d.81f76261.0
Via: SIP/2.0/UDP 43.25.32.85:50006;branch=z9hG4bK-d87543-918910683-1--d87543-;rport=8394
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
To: <sip:+17592034561@23.21.76.23>;tag=gK0cf56d6a
Call-ID: 5d1bb15abd63917a
CSeq: 2 INVITE
Content-Length: 0

ÄY#H †
v v    0HŒ% E fè×@ @ K    ÇèNÃ@œ®N Ä Ä R úACK sip:17592034561@13.45.213.245 SIP/2.0
Via: SIP/2.0/UDP 123.123.1.234;branch=z9hG4bKa52d.b2b867d1.0
From: 19846572302<sip:+19846572302@23.21.76.23>;tag=5d411c09
Call-ID: 5d1bb15abd63917a
To: <sip:+17592034561@23.21.76.23>;tag=gK0cf56d6a
CSeq: 2 ACK
User-Agent: OpenSER (1.2.2-notls (i386/linux))
Content-Length: 0

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