Linksys BUSINESS SPA932 User Manual

Linksys SPA9x2 Phone Administration Guide

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You can change default star code values for your area or region.

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Call Back: Similar to the call back service offered by the PSTN, the caller can activate this 
service on a busy number to recieve a call back as soon as the busy number becomes 
available. The SPA9x2 phone repeatedly dials the busy number until the called party rings 
or answers. Call back is also referred to as repeat dialing and works as follows:

a. The caller selects a line key and enters *66 (call back activation code). 

b. The phone uses this call appearance to call the last called number. The retry period and 

expiration time are configurable.

c. While the call back service is active, the corresponding line key flashes green. The line 

can still be used: the call back service will pause temporarily until the call appearance is 
idle again. To cancel the service, the caller can pick up any line and enter *86. 

d. When the call back number rings or answers, the call appearance rings like a normal 

incoming call. If the call back party answers the call before the caller does, the phone 
sends a holding tone to the call back party. If the caller picks up the call back first, the 
phone rings like a regular outbound call.

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Secure All Calls: Activates sRTP in all extensions. Note that you must install a set of 
certificates to get sRTP in both secure ends.

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Media Loopback: An SP can set up a test call from an IP media loopback server (the source) 
to a subscriber’s VoIP device (the mirror). The test call provides statistical reporting on 
network performance and audio quality. 

 

Depending on the source’s capabilities, the SP can see packet jitter, loss, and delay 
(although Media Loopback cannot identify an offending hop). This helps the SP identify an