Hi all, I would also like to mention the correlation between OpenSIPS configuration parameters and SIP headers in the SIP-registration process:
according to the SIP protocol implementation, you are able to form the username in the Contact: header of your outgoing REGISTER-requests. In OpenSIPS you have to fill it in the 'binding_uri' column of the 'registrant' table [1]. E.g. you want the remote server to send you INVITE with 'alice' in the username of the SIP Request's URI (rU [2] ), and your server's IP is 1.2.3.4, so you have to add 'sip:[email protected]' into this column. During outbound registration, your OpenSIPS will form the Contact: header in it's REGISTER request smth like: Contact: <sip:[email protected]>;expires=3600 So, after successful registration the remote server will send INVITEs to your OpenSIPS like: INVITE sip:[email protected]:5060;user=phone SIP/2.0 After that you can catch such rU using different techniques, starting from simple hard coding in the script: if ( $rU == "alice" ) xlof(L_INFO, "[$ci] relaying to Asterisk PBX"); t_relay(, "192.168.88.11:5060"); ... or in case if there are many incoming extensions, you may also use Dynamic Routing [3] module, to detect how to route inbound calls, according to prefix, filling the 'prefix' column of 'dr_rules' table [4] with the same username, you populate the Contact: header in outbound REGISTER-requests and respectively the same which will send the remote server in its INVITEs. [1] https://www.opensips.org/Documentation/Install-DBSchema-3-5#GEN-DB-REGISTRANT [2] https://www.opensips.org/Documentation/Script-CoreVar-3-5#toc77 [3] https://opensips.org/docs/modules/3.5.x/drouting.html [4] https://www.opensips.org/Documentation/Install-DBSchema-3-5#GEN-DB-DR-RULES -- best regards, Alexey https://alexeyka.zantsev.com/ _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
