TB30s SIP Administrator Guide v1.3
Page 163 of 259
Star Codes.
Star Codes (SC) or Feature Access Codes (FAC) are special char or digity
patterns that are dialed from a phone to invoke particular server features.
Typically, FAC are invoked using a short sequence of digits that are dialed
using the keypad on an analog phone, while IP phones users select soft-keys
to invoke the same features. Generally speaking service will be invoked by
sending an INVITE to a specific uri which contains the FAC.
A description of how to change the TB30 local soft-keys configuration to
activate/deactivate these features instead of the local functions, and
instructions on how to use each of them is provided in the following
chapters.
A special case takes place when a FAC has to be sent as DTMF during an
existing SIP call. For this purpose, a specific type of function key is defined
and described in chapter 6.9
Also, for other potential services invoked by FAC‟s and not supported by
softkeys, a “Service” type of function key is defined and described in chapter
6.10.
Things to know :
1.- For each local function, a flag is used to state if the function is managed
locally (as current behavior) or using the star codes. For those items which
have a "local/sc" flag, whenever the flag is set to "local", the behavior will be
the same as it is today. So chapters below refer only to the flag="sc" value
when applicable.
2.- When function flags are set to "sc" for features launching some kind of
icon or message on the display (CF, DND...), then this indication will not be
present, in order to avoid un-synchronization with server state. Better not
to provide any state than a wrong one!
3.- A "Star Code" can include keypad digits (0-9, * and #), as well as any
chars allowed in uri's. For DTMF function key type only keypad digits are
allowed.
4.- For functions related to call forward, if sc is enabled, we need to use a
different call to send the sc. It is assumed the server is in charge of
canceling the initial call being forwarded.
5.- When a star code is sent and there is an active call, active call is put on
hold
Glossary: SC= star code; FK= function key
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