Administrator Level Options41-001160-01, Rev 00, Releaes 2.3 3-59Administrator OptionsAdvanced SIP SettingsIn addition to the basic SIP settings, you can also configure the followingadvanced SIP parameters. These parameters are configurable via the Aastra WebUI and the configuration files on a global basis only.Parameter inAastra Web UIParameters inConfiguration Files DescriptionExplicit MWI Subscription sip explicit mwi subscription If the IP phone has a message waitingsubscription with the Service Provider, aMessage Waiting Indicator (MWI) (LED ordisplay icon) tells the user there is a messageon the IP Phone. You can enable and disableMWI by setting this parameter to 0 (disable) or1 (enable) in the configuration files or bychecking the box for this field in the AastraWeb UI. Default is disabled.For more information, see Chapter 4,“Advanced SIP Settings (optional)” onpage 4-80.Explicit MWI SubscriptionPeriodsip explicit mwi subscriptionperiodThe requested duration, in seconds, beforethe MWI subscription times out. The phonere-subscribes to MWI before the subscriptionperiod ends.For more information, see Chapter 4,“Advanced SIP Settings (optional)” onpage 4-80.Missed Call SummarySubscription(Global and Per-Line)sip missed call summarysubscription(global)sip lineN missed callsummary subscription(per-line)Enables or disables the Missed Call SummarySubscription feature.This feature allows missed calls that havebeen redirected by the server, to beincremented in the missed calls indicator onthe phone it was initially directed to. Default isdisabled.For more information about this parameter,see Chapter 6, the section, “Missed CallSummary Subscription” on page 6-13.
