Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
461
Description
It enables or disables the phone to answer an incoming intercom call while there is already an active
call on the IP phone.
Note: It works only if “features.intercom.allow” and "call_waiting.enable" are set to 1 (Enabled) and
“phone_setting.call_appearance.calls_per_linekey” is greater than 1.
Permitted
Values
0-Disabled
1-Enabled, the phone will automatically answer the intercom call and place the active call on hold.
Default
0
Web UI
Features > Intercom > Intercom Barge
Phone UI
Menu > Features > Intercom > Intercom Barge
Parameter features.intercom.barge_in_dialing.enable
<y0000000000xx>.cfg
Description
It enables or disables the intercom call to answer an incoming intercom call while dialing.
Note: It works only if “features.intercom.barge” is set to 0 (Disabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter features.intercom.headset_prior.enable
<y0000000000xx>.cfg
Description It configures the channel mode to use when receiving an incoming intercom call.
Permitted
Values
0-Speaker Mode
1-Headset Mode, it works only if you connect the headset to the IP phone and the headset mode is
activated for use.
Default
1
Supported
Devices
All phones except CP920
Parameter account.X.alert_info
[1]
<MAC>.cfg
Description
It configures the value of the Alert-Info header for intercom feature.
The value format likes: <sip:XXX (X can be any value)>; answer-after=0.
Note: If both Call-Info header (defined by the parameter "account.X.call_info") and Alert-Info header
are configured, the Call-Info header has a higher priority than the Alert-Info header.
Permitted
Values
String within 256 characters
Default
Blank
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
CSTA Control
User Agent Computer Supported Telecommunications Applications (uaCSTA) is explained in detail in
for SIP Phone User Agents (uaCSTA)
and
Services for Computer Supported Telecommunications Applications
