Mitel Deutschland GmbH 68635RFP36U-01 Benutzerhandbuch
SIP-DECT OM System Manual
278
To prevent situations where the OMM tries to contact with each new transaction servers which are
unreachable (out of service), the OMM offers a blacklist feature. If there is no answer from a SIP server,
this specific server can be put into a blacklist and will not be contacted anymore for a configurable time
of “Blacklist time out” minutes by all adjacent SIP transactions.
unreachable (out of service), the OMM offers a blacklist feature. If there is no answer from a SIP server,
this specific server can be put into a blacklist and will not be contacted anymore for a configurable time
of “Blacklist time out” minutes by all adjacent SIP transactions.
In differentiation to the concepts described in the following sections note that independent of which SIP
server is used, all requests send by the OMM carry the same sender Address-of-Record (AOR)
server is used, all requests send by the OMM carry the same sender Address-of-Record (AOR)
. This
means that the sender URI consisting of user-ID and domain is not changed during a failover to another
server.
server.
7.20.3 BACKUP SIP SERVERS
The SIP-DECT solution allows configuration of two additional levels of backup servers, in addition to the
primary proxy, outbound proxy and registrar server. These two additional levels of backup servers are
referred to as secondary and tertiary servers in the following sections.
primary proxy, outbound proxy and registrar server. These two additional levels of backup servers are
referred to as secondary and tertiary servers in the following sections.
1
RFC 3261: An address-of-record (AOR) is a SIP or SIPS URI that points to a domain with a location
service that can map the URI to another URI where the user might be available. Typically, the location
service is populated through registrations. An AOR is frequently thought of as the “public address” of the
user.
service is populated through registrations. An AOR is frequently thought of as the “public address” of the
user.