Yealink SIP-T23P User Manual

User Guide for the SIP-T23P/G IP Phone
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The phone sends RTP to a preconfigured multicast address (IP: Port).
Both the sender’s and receiver’s phones play a warning tone and the receiver
automatically answers the multicast RTP session in the speakerphone mode.
The multicast paging key LED illuminates solid green.
The following figure shows a multicast RTP session on the phone:
2. To place the current multicast RTP session on hold, press the Hold soft key.
The sender’s phone places the multicast RTP session on hold and receiver’s phone
releases the session.
3. To resume the held multicast RTP session, press the Resume soft key.
The multicast RTP session is established again.
4. To end the multicast RTP session, press the EndCall soft key.
Note
To send RTP stream via a paging key list when the receiver’s phone is idle:
1. Press the paging list key when the phone is idle.
2. Press or to select the desired group.
3. Press or the Paging soft key to send RTP.
4. To place the current multicast RTP session on hold, press the Hold soft key.
The sender’s phone places the multicast RTP session on hold and receiver’s phone
releases the session.
5. To resume the held multicast RTP session, press the Resume soft key.
The multicast RTP session is established again.
6. To end the multicast RTP session, press the EndCall soft key.
Multicast RTP is one way only from the sender to the multicast address(es) (receiver). For
outgoing RTP multicasts, all other existing calls on the phone will be placed on hold.

Yealink SIP-T23P Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Display resolution	132 x 64 pixels
Ethernet LAN (RJ-45) ports	2
Security algorithms	HTTPS
Ethernet LAN data rates	10, 100 Mbit/s
Voice codecs	CNG, G.711a, G.722, G.726, G.729ab, VAD
Phonebook capacity	1000 entries