Yealink CP860 Administrator's Guide

Configuring Basic Features
131
Parameters
Permitted Values
Default
Description:
Configures the session timer of T4 (in seconds).
T4 represents the maximum duration a message will remain in the network.
Web User Interface:
Account->Advanced->SIP Session Timer T4 (2.5~60s)
Phone User Interface:
None
To configure session timer via web user interface:
1. Click on Account->Advanced.
2. Enter the desired value in the SIP Session Timer T1 (0.5~10s) field.
The default value is 0.5s.
3. Enter the desired value in the SIP Session Timer T2 (2~40s) field.
The default value is 4s.
4. Enter the desired value in the SIP Session Timer T4 (2.5~60s) field.
The default value is 5s.
5. Click Confirm to accept the change.
Call hold provides a service of placing an active call on hold. 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 (e.g., a=sendonly). The other is RFC 2543, which sets the

Yealink CP860 Specifications

General

Speakerphone	Yes
Voice codecs	G.711, G.722, G.729ab, iLBC
Handset type	-
Product type	IP Phone
Product color	Black
Display resolution	192 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	1
Networking standards	IEEE 802.1x, IEEE 802.3af
Supported network protocols	IPv4/IPv6
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Number of handles included	- pc(s)
Storage temperature (T-T)	10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	260 mm
Width	320 mm
Height	52 mm