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 Posted: Thu Aug 19, 2021 10:09 am Post subject: [Freeswitch-users] REGISTER with Telekom SIP Trunk |
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Hello,
I am trying to register with a Deutsche Telekom SIP Trunk.
The Deutsche Telekom technical documentation states that the client must set the following SIP header fields:
For an initial REGISTER without Authentication Challenge the SIP Header fields
- Security-Client: sdes-srtp;mediasec
- Proxy Request: mediasec
- Requirement: mediasec
shall be included. The platform replies with SIP 401 Unauthorised and contains the SIP header fields
- Security server: msrp-tls;mediasec
- Security server: sdes-srtp;mediasec
- Security server: dtls-srtp;mediasec
with indication of the possible encryption methods. For the following REGISTER with Authentication Challenge,
in addition to the originally included SIP header fields Security-Client, Proxy-Require, Require the SIP header fields
- Security Check: msrp-tls;mediasec
- Security check: sdes-srtp;mediasec
- Security check: dtls-srtp;mediasec
shall also be included. According to RFC3261, the Security-Verify header fields can also be combined as a single header field.
I have seen, that the Sofia-Stack has implemented these Fields.
But I have not found a way to set these header fields in the REGISTER message.
(For the INVITE messages I’m using the set action sip_h_*; not sure if this is correct.
There I have the Problem, that I’m not able to set the SDP Attribute
a=3ge2ae:requested)
Regards, Johannes |
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