Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series IP Phones
392
Procedure
Ignore Incoming Call can be configured using the configuration file.
Central Provisioning
(Configuration Files)
<y0000000000xx>.cfg
<MAC>.cfg
Configure the Ignore Incoming Call.
Parameter:
features.ignore_incoming_call.enabl
e
Details of Configuration Parameter:
Parameter Permitted Values Default
features.ignore_incoming_call.enable 0 or 1 0
Description:
Enables or disables the Ignore Incoming Call feature.
0
-Disabled
1
-Enabled, the users cannot answer the incoming call during the call. The IP phone will not
prompt the incoming call information until the current call is end. And if there is an incoming
call arrives when the IP phone is idle, the user can only press the corresponding line key, the
Answer
soft key or the OK key to answer the call.
Web User Interface:
None
Phone User Interface:
None
Call Hold
Call hold provides a service of placing an active call on hold. The purpose of call hold is to pause
activity on the existing call so that you can use the phone for another task (for example, to place
or receive another call).
When a call is placed on hold, the IP phones send an INVITE request with HOLD SDP to request
remote parties to stop sending media and to inform them that they are being held. IP phones
support two call hold methods, one is
RFC 3264, which sets the “a” (media attribute) in the SDP
to sendonly, recvonly or inactive (for example, a=sendonly). The other is RFC 2543 , which sets
the “c” (connection addresses for the media streams) in the SDP to zero (for example, c=0.0.0.0).
When you place the call on hold, the IP phone is in the call hold state, and the other phone is in
the call held state.
Call Hold Tone/Call Held Tone feature allows IP phone to play a call hold/call held tone at
specified intervals when there is a call on hold/held. The call hold/call held tone is played
through the speakerphone.