Aastra Telecom 53I User Manual

Operational, Basic, and Advanced Parameters

41-001160-00, Release 2.1, Rev 04

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Configuration Parameters

Parameter – 

(in Web UI)

Advanced Settings->Global SIP->

Advanced SIP Settings

aastra.cfg, <mac>.cfg

Specifies the amount of time, in seconds, that the phone uses the Missed 

Calls Summary Subscription feature. This parameter is always enabled 

with a default value of 86400 seconds. When the phone reaches the limit 

set for this parameter, it sends the subscription again.

To disable this parameter, leave the field blank or set the field to zero (0).

Integer

86400

0 to 99999999

sip missed call summary subscription period: 70000

Parameter – 

(in Web UI)

Advanced Settings->Global SIP->

Advanced SIP Settings

aastra.cfg, <mac>.cfg

Enables or disables the Missed Call Summary Subscription feature. 

This feature allows missed calls that have been redirected by the server, 

to be incremented in the missed calls indicator on the phone it was initially 

directed to. 

For example, phones A, B, and C are connected to the server. You 

configure the server to direct calls coming into phone B (which has 

voicemail configured) to be forwarded to phone C. When phone A calls 

phone B, the server forwards the call to phone C. If you enable the sip 

missed call summary subscription parameter, phone B receives 

notification from the server that the call was forwarded and the missed 

calls indicator is incremented on phone B.

Note: You must configure voicemail on the phone that the call was initially 

directed to (phone B in the above example).

Boolean

0 (disabled)

0 (disabled)

1 (enabled)

sip line1 missed call summary subscription: 1