Hi,

My network configuration is:

sip Phone(any IP)..........>OpenSBC(lan IP: 10.0.4.45, Wan Ip: 220.247.163.244)............>softswitch(IP:10.0.4.4)

I tried with the following configuration

[Solegy]
RTTS-Client-Address=220.247.163.244

[OpenSBC-General-Parameters]
SIP-Log-Level=3
PTRACE-Log-Level=5
Log-File-Prefix=b2bua
User-Agent-Name=OpenSBC
SBC-Application-Mode=B2BUpperReg Mode
Enable-Trunk-Port=True
Enable-Calea-Port=True
RTP-Min-Port=30000
RTP-Max-Port=35000
NAT-Keep-Alive-Interval=15
Send-OPTIONS-NAT-Keep-Alive=False
Send-Responses-Using-New-Socket=True
Enable-Local-Refer=True
Disable-Refer-Optimization=False
Max-Forwards=70
Encryption-Mode=XOR
Encryption-Key=GS
Alerting-Timeout=30000
Seize-Timeout=60000
SIP-Timer-B=Default
SIP-Timer-H=Default
Session-Keep-Alive=1800
Session-Max-Life-Span=10800
Max-Concurrent-Session=100
Max-Call-Rate-Per-Second=10

[Local-Domain-Accounts]
Accept-All-Registration=False
Account-List Array Size=2
Account-List 1=sip:9000204@220.247.163.244
Account-List 2=sip:9000202@220.247.163.244

[B2BUA-Routes]
Route-List Array Size=2
Route-List 1=[sip:*@*] sip:10.0.4.4;sip-trunk=true
Insert-Route-Header=True
Rewrite-TO-URI=True
Prepend-ISUP-OLI=False
Route-By-Request-URI=True
Route-By-To-URI=True
Drop-Routes-On-Ping-Timeout=True
Use-External-XML=False
External-XML-File=b2bua-route.xml
Route-List 2=[sip:*@*] sip:9000204@220.247.163.244

[RTP-Proxy]
Proxy-On-Private-Contact=True
Proxy-On-via-received-vs-signaling-address=True
Proxy-On-Private-Via=True
Proxy-On-Different-RPORT=True
Proxy-All-Media=True

[Upper-Registration]
All-Reg-As-Upper-Reg=False
Enable-Stateful-Reg=True
Rewrite-TO-Domain=True
Rewrite-FROM-Domain=True
Route-List Array Size=1
Route-List 1=[sip:*@220.247.163.244] sip:10.0.4.4:5060

[SIP-Transports]
Main-Interface-Address Array Size=1
Main-Interface-Address 1=sip:220.247.163.244:5060
Backdoor-Interface-Address=sip:10.0.4.45:5061
Trunk-Interface-Address=sip:10.0.4.45:5064
Media-Server-Interface-Address=sip:*:5066
CALEA-Interface-Address=sip:*:5068
Auxiliary-Interface-Address=sip:*:5070
Interface-Route-List Array Size=0

[Media-Server]
Enable-Media-Server=True
Media-Server-Number=5000
Codec-List Array Size=0
No-RTP-Proxy-On-All-Transfers=False
Enable-Announcement-Service=False
4xx-Error-Map=prompts/basic/cant_complete.wav
5xx-Error-Map=prompts/basic/cant_complete.wav
6xx-Error-Map=prompts/basic/cant_complete.wav
Announcement-Error-Map Array Size=0

[SIP-Trunk-Config]
SIP-Trunk-Config=
SIP-Trunk-Config=<siptrunk trunk-name="bpl-opensbc"
SIP-Trunk-Config=route-set="10.0.4.4"
SIP-Trunk-Config=sip-domain="10.0.4.4"
SIP-Trunk-Config=expires="3600">
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=<account user-name="9000204"
SIP-Trunk-Config=auth-user-name="9000204"
SIP-Trunk-Config=auth-password=""
SIP-Trunk-Config=inbound-route="[sip:*@*]sip:9000204@220.247.163.244"
SIP-Trunk-Config=expires="3600" />
SIP-Trunk-Config=
SIP-Trunk-Config=<account user-name="9000202"
SIP-Trunk-Config=auth-user-name="9000202"
SIP-Trunk-Config=auth-password=""
SIP-Trunk-Config=expires="3600" />
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=<account user-name="9000204"
SIP-Trunk-Config=auth-user-name="9000204"
SIP-Trunk-Config=auth-password=""
SIP-Trunk-Config=inbound-route="[sip:*@*] sip:9000204@220.247.163.244"
SIP-Trunk-Config=expires="3600" />
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=<account user-name="9000202"
SIP-Trunk-Config=auth-user-name="9000202"
SIP-Trunk-Config=auth-password=""
SIP-Trunk-Config=expires="3600" />
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=
SIP-Trunk-Config=

For this configuration softphone is registered in openSBC and sip trunk is also registered with our softswitch. Outgoing call is possible but incoming call fails.

In incoming call after sending 100(trying) no 180(ringing) message sends. After sometime "cancel" message come.

Please help me.