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C
ONFIGURING
THE
P
HONE
When the telephone is registered towards the backup registrar and when
the user initiates a call, the INVITE will be sent to the primary proxy first
and then to the backup proxy, which causes a delay of the call with 3-4
seconds.
11.29
Registration at Branch Offices
The branch office scenario means that the telephones are registered to
to PBX in the main office and if the connection to the main office fails, the
phones shall register to a local SIP server.
When the connection to the main office is working again, the telephones
shall register towards this PBX again.
The way to configure this is to use
sip backup proxy ip
and
sip backup
registrar ip
in the
aastra.cfg
file, see section 11.28 Redundancy on page
60 or see 11.22 Using DNS SRV Resource Records on page 57.
11.30 Voice
When a user has got a voice mail and the message waiting key is
flashing, the user can listen to his voice mail by pressing this key. The
telephone will send the *32# procedure to the system.
If there is no message waiting, it can still be useful to call the voice mail
system. This is done by pressing the Services key and select VoiceMail.
In this case the phone will use the directory number to access the voice
mail system.
The settings for these options are defined in the aastra.cfg file. Below is
an example:
sip vmail:”*32#”
sip line1 vmail:”*32#”
sip explicit mwi subscription: 1
servicesscript: http://$$PROXYURL$$:22222/services?user=$$SIPUSERNAME$$
voicemailnr=12345
11.31 Corporate
Directory
From the phone it is possible to search in a corporate directory via the
XML interface described in XML API for Aastra SIP phones.
From CMG7.5-SP1 the XML support for searching in the corporate
directory is included.
