Yealink SIP-T42S User Manual

User Guide for the SIP-T42S IP Phone
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- Press to adjust the volume of audio output.
- Press the Back soft key to stop the playback. The phone returns to the Browse Audio
screen.
- Press the Speakerphone key, the HEADSET key, or pick up the handset to alternate among
Speakerphone, Headset and Handset modes.
If you are playing back a recorded call and an incoming call arrives on your phone, the playback
pauses and the phone rings. You can press the Play soft key again to play the recording when
ending the call.
Deleting the Recorded File
To delete a recorded file:
1. Press Menu->USB->Browse Audio.
2. Press or to highlight the recording you want to delete.
3. Press the Delete soft key.
The LCD screen prompts the following warning:
4. Press the OK soft key to confirm the deletion or the Cancel soft key to cancel.
Viewing the Storage Space
You can view the storage space (e.g., total space, used space, free space) of the USB flash drive
on the phone.
To view the storage space:
1. Press Menu->USB->Storage Space.
Recording Using a Record Key
There are two ways of call recording in server:
 Record: The phone sends a SIP INFO message containing a specific header “Record: on/off”
to trigger a recording.
 URL Record: The phone sends an HTTP URL request to trigger a recording. Contact your

Yealink SIP-T42S Specifications

General

Manual	Yes
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Lines quantity	12 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	CNG, G.711Mu, G.711a, G.723.1, G.726, G.729ab, VAD, iLBC
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	2.7 \
Display resolution	192 x 64 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Volume control	Digital
Number of programmable keys	6
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, FTP/TFTP/HTTP/HTTPS

Weight and Dimensions

Depth	189 mm
Width	212 mm
Height	175 mm
Package depth	223 mm
Package width	246 mm
Package height	120 mm