Yealink SIP-T33P Administrator's Guide

Advanced Features
428
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 T30P, T30, 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 T33P/T33G, X=1-4; for
T40P/T40G/T23P/T23G, X=1-3; for T31P/T31G/T31/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.

Yealink SIP-T33P Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Wall mountable	Yes
Operating system installed	Linux
Lines quantity	4 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	4
Volume control	Buttons
Number of function keys	5
Display diagonal	2.4 \
Display resolution	320 x 240 pixels
Voice codecs	AGC, AJB, CNG, G.711a, G.711u, G.722, G.723.1, G.726, G.729, G.729A, PLC, VAD, iLBC
Security algorithms	AES, HTTPS
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
RJ-9 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Input frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
Power consumption (typical)	3 W
Power consumption (Power over Ethernet (PoE))	5 W
Number of handles included	1 pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	186 mm
Width	212 mm
Height	146 mm