Administrator Guides EN Owner's manual

Abstract (from RFC3261):
41-001391-00 Rev 03 – 04.2012 13-6
407 Proxy Authentication Required
Indicates that the user agent needs to be authenticated before it can make a successful request.
408 Request Timeout
Usually generated by a SIP stack when a request has not received any response for a certain period of time.
480 Temporarily Unavailable
A user agent may use this response code as a “do not disturb” notice.
481 Call/Transaction Does Not Exist
Indicates that a server received a request referring to a non-existing (possibly previously terminated) call.
482 Loop Detected
Servers may generate this if they detect that the same SIP message has arrived for processing several times without
changing, indicating that there is an endless loop in the system. This response breaks the loop and terminates the
transaction which was in the looped state.
486 Busy Here
A user agent may send this to indicate that he is busy. It is up to the user agent to decide whether it can accept addi-
tional calls while in an existing call, and this response may be used if no additional calls can be accepted.
SIP Services
The BluStar SIP Service essentially consists of a single multi-threaded software application that acts as a combined SIP
Proxy Server and SIP Registrar. The SIP Service interacts with the Database Daemon (DBD) application via the CORBA inter-
process communication protocol. The DBD hosts certain modules required by the SIP Service, such as the Location Lookup
(incorporating all the various routing mechanims, including rewriting of Request-URIs regular expressions) and interfaces
to the database for the Registrar.
This service listens on (i.e. accepts incoming packets directed to) the standard SIP port (5060) on TCP and UDP transports.
From the point of view of a BluStar 8000i terminal or other SIP User Agents, this service acts as the outbound and inbound
SIP proxy server (as defined above), as well as the SIP registrar
The SIP Proxy has built-in support for certain call forwarding features:
• Forward All Calls - This forwards all calls to the user to a specified SIP address.
• Forward Declined Calls - This forwards all calls declined by the user (by sending a SIP "486 Busy" response) to a specified
SIP address.
• Forward Calls if Not Available - This forwards all calls to a specified SIP address when the user is not logged on. Note that
this is not affected in any way by the presence of the user, more information on call forwarding based on presence can
be found in section.
• Forward Calls if Unanswered - This forwards calls to a specified SIP address if the user has not answered the call within a
specified period.
Note:
A more complete list of response codes and descriptions can be found in the RFC 3261 document.
Note:
For detailed information on regular expressions, see Routing Rules on page 7-5.