We have configured Kamailio IMS (P, I, S-CSCF) to use a single realm with the
same NETWORKNAME and trying to make a call between bob and alice.
We are getting S-CSCF replies “Forbidden – Domain not served” in two scenarios:
1. When bob calls alice, the INVITE went from P->S->I->S and the destination
S-CSCF responded this error
2. During SIP registration in responding to SUBSCRIBE (endpoint still can
register even with this reply, so we proceeded with making call)
In quick search we found that in scscf/kamailio.cfg route{ } implementation
there is a case when this error is generated:
# Terminating
if (uri == myself || uri =~ "tel:.*") {
if (!term_impu_registered("location")) {
xlog("L_DBG", "We need to do an UNREG server
SAR assignemnt");
assign_server_unreg("UNREG_SAR_REPLY",
"location", "term");
exit;
}
} else {
sl_send_reply("403","Forbidden - Domain not served");
exit();
}
route(term);
break;
What is this error designed for? Also in general are we supposed to rework the
routing code in Kamailio.cfg (P, S, I-CSCF)?
Thanks for any suggestions in advance.
Yin
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