Samsung Ubigate iBG3026, Configuration Manual, Page: 395 / 718

Ubigate iBG3026 Configuration Guide/Ed.00
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Table 28.3 Call via Proxy Server (Continued)
No. Message Description
18 ACK SIP Gateway 1 sends ACK request to a Proxy server.
ACK request indicates that SIP Gateway 1 received 200
OK response normally.
19 ACK Proxy server sends ACK request to a SIP Gateway2.
20 Connect ACK SIP Gateway 2 sends Connect ACK from PBX B.
21 Disconnect If a subscriber hangs up the phone, SIP Gateway 2
receives Disconnect from PBX B.
22 BYE SIP Gateway 2 sends BYE request to a Proxy server.
BYE request indicates the end of a session.
23 BYE Proxy Server 2 sends Bye Request to SIP Gateway 1.
24 Disconnect Upon receiving BYE, SIP Gateway 1 sends Disconnect
to PBX A.
25 Release Receives a Release in regard to Disconnect.
26 Release Receives a Release in regard to Disconnect.
27 200 OK SIP Gateway 1 sends 200 OK to Proxy Server. 200 OK
indicates that a session was terminated normally by
BYE request.
28 200 OK Proxy Server 2 sends 200 OK to SIP Gateway 2.
29 Release Complete Receives Release Complete in regard to Release.
30 Release Complete Receives Release Complete in regard to Release.
Gateway Features
SIP Gateway provides the following features:
Support early media session.
Support out of band DTMF relay.
Support for Reliability of provisional response in SIP
Ability to specify the maximum number of SIP redirects.
Ability to specify SIP on a dial-peer basis.
Configurable SIP transaction timers.
Support for a variety of signaling protocols, including ISDN, PRI, and
channel associated signaling(CAS).