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Trunk Access Codes

 lists trunk access codes used to select trunks when placing outgoing calls.

Diagnostic –
Show Version

9928 (9128)

To check the call processing software version at an 
administrator's phone, you can enable diagnostics mode, then 
enter this feature code to view the version and date of the call 
processing software.

However, feature code 9928 displays the firmware version of the 
phone if it is in SIP mode. 

Diagnostic –
SIP View

9987 (9187)

Allows you to change the system wide SIP output value. Options 
include No Output, Headers, and Full Output.

Diagnostic –
Spare 1–3

9910–9912

(9110–9112)

For internal engineering use only.

Diagnostic –
System History

9974 (9174)

For internal engineering use only.

Diagnostic –
View Displays

9983 (9183)

For internal engineering use only.

Program Database

9932 (9132)

Can be used for programming phone, system, and trunk 
parameters.

Seize Device

9973 (9173)

Used during troubleshooting to seize a specific trunk or phone by 
indicating the board number, port number, and device number.

System History –
Freeze

System History – 
Unfreeze

9993 (9193)

9998 (9198)

The system fault history can be frozen or unfrozen using these 
feature codes when diagnostics mode is enabled. Fault history is 
used by service personnel when troubleshooting the system.

Automatic Route Selection 
(ARS)

92000

Allows the system to select the route wanted for placing a call, 
as programmed in the database.

Trunk Group Access 1–208

92001–92208

Selects an available trunk from a programmed group of trunks 
for placing an outside call.

Emergency Call

911

(999/112 or 

as applicable)

Entering this feature code selects an outgoing trunk and 
automatically dials the programmed Emergency Call number, 
which is routed by default out Trunk Group 1.

Outgoing Call

8

Selects an outgoing trunk according to the programmed 
outgoing access mode for that phone.

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