Solved IP Based authentication method on Trunk

[Martin Schilder]

Hello
I configured an yeastar TG200 in order to route calls over the gsm network. In order to make this happen i followed the guidelines which tells that the authentication method should be set to "Do not require - IP Based"
Outbound calls are working flawless but inbound the pbx throws a 407

SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.150.232:5060;branch=z9hG4bK1a60db9a;rport=5060
To: <sip:[email protected]:5060>
From: "+316xxx" <sip:[email protected]>;tag=as1d49d203
Call-ID: [email protected]
CSeq: 102 INVITE
Content-Length: 0
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.150.232:5060;branch=z9hG4bK1a60db9a;rport=5060
Proxy-Authenticate: Digest nonce="414d53595a9fa6f672:1770e437074c164a2dc00f6f3597bd03",algorithm=MD5,realm="3CXPhoneSystem"
To: <sip:[email protected]:5060>;tag=bb13966e
From: "+316xxx" <sip:[email protected]>;tag=as1d49d203
Call-ID: [email protected]
CSeq: 102 INVITE
User-Agent: 3CXPhoneSystem 15.5.9348.3 (9348)
Content-Length: 0

Based on the type of authentication i would not expect this.. Is there a way to work around this?

Martin

 

[Martin Schilder]

In the meantime i found the solution The device needs to be configured as "Add sip trunk" instead of "Add gateway"

 

[YiannisH_3CX]

Glad to see the issue has been resolved and thank you for updating the thread with your solution