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Operational, Basic, and Advanced Parameters
A-77 41-001343-02 REV04 – 05.2014
Backup Outbound Proxy (Per-line Settings)
BLA Support for MWI
Parameter –
sip lineN backup outbound proxy
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description The IP address or domain name of the backup outbound SIP proxy server for which the
IP phone uses when the primary SIP proxy is unavailable. Use this parameter to config-
ure the sip backup outbound proxy on a per-line basis.
Format IP address or fully qualified Domain Name
Default Value 0.0.0.0
Range Not Applicable
Example sip line1 backup outbound proxy: drax.us.aastra.com
Parameter –
sip lineN backup outbound proxy port
(N is a line number from 1 to 9)
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description The backup outbound proxy port on the backup outbound proxy server to which the
IP phone sends all SIP messages. Use this parameter to configure the sip backup out-
bound proxy port on a per-line basis.
Format Integer
Default Value 0
Range 0 - 65535
Example sip line1 backup outbound proxy port: 5060
Parameter –
sip mwi for bla account
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description Enables or disables a BLA configured line to send an MWI SUBSCRIBE message for the
BLA account.
Notes:
• If you change the setting on this parameter, you must reboot the phone for it to take
affect.
• Both the “sip explicit mwi subscription” and “sip mwi for bla account” parameters must
be enabled in order for the MWI subscription for BLA to occur.
• The MWI re-subscription for the BLA account uses the value set for the "sip explicit
mwi subscription period" parameter to re-subscribe.
• Whether or not the "sip mwi for bla account" parameter is enabled, the priority for dis-
playing MWI does not change.
Format Boolean
Default Value 0 (disabled)
Range 0 (disabled)
1 (enabled)
Example sip mwi for bla account: 1