A
ASTRA
6700
I
SIP T
ERMINALS
FOR
MX-ONE
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HLR server has reached its limit, an alternative server will be able to
accept the registration.
When this feature is used, the balancing of the registration load has to
be considered already during the deployment of the system, e.g. an
even initiation of the generic extensions among the available servers.
To activate the registration distribution feature in MX-ONE enter the
command:
extension_registration_distribution -i
11.28 Redundancy
The primary proxy IP address shall be set according to 7.3.1 Log on with
Soft key on page 21. It is also possible to define in the
aastra.cfg
file a
redundant IP address with the parameters:
sip backup proxy ip
sip backup registrar ip
The IP address to set shall be equal in both of these parameters. The
redundant ip address will be used by the telephone if the sip proxy server
with the primary ip address does not respond.
When the telephone is registered towards the backup sip registrar, the
telephone tries to register towards the primary server. If this server
responds, the phone tries to register towards the primary proxy server
again.
There is support for redundancy settings in Manager TS.
For more information about the redundancy functionality in MX-ONE,
see feature description for HLR Redundancy.
11.28.1 Limitations
When the phone loses contact with the primary SIP registrar, it can take
up to 10 minutes (refresh of the registration time) before the telephone
registers towards the backup registrar.
Aastra 6700i terminals, deployed with Log On/Off xml key, cannot use
the key when the primary proxy/registrar is not responding. As a work-
around it is possible to log on with the free seating procedure
(*11*PIN*extension number#).
If the terminal is registered towards the backup registrar and if the user
logs off with the #11# procedure, the IP address to the primary SIP proxy
is lost and it is only possible to log on towards the backup SIP proxy. To
go back to primary SIP proxy, the local configuration settings have to be
removed in the phone, see 9.2 Remove local configuration settings on
page 27.
