Advanced Features
424
CSeq: 1 INVITE
Contact: <sip:1010@10.10.20.18:5060>
Content-Type: application/sdp
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER,
PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
User-Agent: Yealink SIP-T46G 28.82.0.20
Replaces: 0_1756536024@10.10.20.34;to-tag=3779921438;from-tag=3408640225
Allow-Events: talk,hold,conference,refer,check-sync
Supported: replaces
Content-Length: 304
Related Topics
Dialog Info Call Pickup Configuration
Busy Lamp Field
Dialog Info Call Pickup Configuration
The following table lists the parameter you can use to configure dialog Info call pickup.
Parameter
account.X.dialoginfo_callpickup
[1]
<MAC>.cfg
Description
It enables or disables the phone implements directed call pickup through SIP signals for a specific
account.
Note: In this way, you do not need to configure the directed call pickup code.
Permitted
Values
0-Disabled
1-Enabled, the phone picks up a call according to the Replaces header in the INVITE message.
Default
0
Supported
Devices
All phones except T19(P) E2 and CP920
Web UI
Account > Advanced > Dialog Info Call Pickup
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42U/T42G/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.
Call Completion
When you place a call and the callee is temporarily unavailable to answer the call, call completion allows your
phone to monitor the busy party and establish a call after the busy party becomes available to receive a call.
Two factors commonly prevent a call from connecting successfully:
l Callee does not answer
l Callee actively rejects the incoming call before answering
Yealink phones support call completion using the SUBSCRIBE/NOTIFY method, which is specified in draft-poetzl-
sipping-call-completion-00, to subscribe to the busy party and receive notifications of their status changes.
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