An inbound SIP URI:
from sip:user1@domain1 to sip:user2*domain2@gateway_domain
is translated to an XMPP JID:
from user1*domain1@xmpp_domain to user2@domain2
An inbound XMPP JID (uri):
from user1@domain1 to user2*domain2@xmpp_domain
is translated to a SIP URI:
from sip:user1*domain1@gateway_domain to sip:user2@domain2
Where '*' is the domain_separator, and gateway_domain and xmpp_domain are defined below.
2-way dialback sequence with xmppd2:
* * Originating server (us) Receiving server (them) Authoritative server (us) * ----------------------- ----------------------- ------------------------- * | | | * | establish connection | | * |------------------------------>| | * | send stream header | | * |------------------------------>| | * | send stream header | | * |<------------------------------| | * | send db:result request | | * |------------------------------>| | * | establish connection | * |------------------------------>| * | send stream header | * |------------------------------>| * | send stream header | * |<------------------------------| * | send db:result request | * |------------------------------>| * | send db:verify request | * |------------------------------>| * | send db:verify response | * |<------------------------------| * | send db:result response | * |------------------------------>| * | send db:verify request | * |<------------------------------| * | send db:verify response | * |------------------------------>| * | send db:result response | * |<------------------------------| * : : : * : : : * | outgoing <message/> | : * |------------------------------>| : * | incoming <message/> | * |------------------------------>| *
Note: Dialback is an old mechanism that is now replaced by TLS connections in "modern" XMPP servers. With TLS, dialback is not used.
1.7.1