IMSDROID Client sending 180 instead of 183 even if precondition and 100 rel are present

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a) Before posting your issue you MUST answer to the questions otherwise it
will be rejected (invalid status) by us
b) Please check the issue tacker to avoid duplication
c) Please provide network capture (wireshark) or Android log (DDMS output)
if you want quick response

What steps will reproduce the problem?
1.A and B client register on OPENIMS
2.A calls B
3.

What is the expected output? What do you see instead?
The exepected output is that the B party which is also IMSdroid sends 180
ringing instead of 183 session in progress even if the INVITE towards B party
contains precondition and 100 rel in supported header.
In attached traces,
172.21.183.254 IP contains both A party and B party
172.21.183.229 IP is OpenIMS
172.21.183.145 is Application server

What version of the product are you using? On what operating system?
I have tried with both versions 2.548.870 and 2.544.836. but same issye

Please provide any additional information below.

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Original issue reported on code.google.com by `mr.harsh...@gmail.com` on 9 Mar 2015 at 1:32

Attachments:
- [AtoB_basic_call_Volte.pcap](https://storage.googleapis.com/google-code-attachments/imsdroid/issue-549/comment-0/AtoB_basic_call_Volte.pcap)