EasyManuals Logo

Yealink SIP-T48G Administrator's Guide

Yealink SIP-T48G
898 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #860 background imageLoading...
Page #860 background image
Administrators Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
840
Step
Action
Description
single call leg is identified in the
CSeq field.
The media capability User A is
ready to receive is specified.
The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITEProxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
F3
100 TryingUser B to Proxy
Server
User B sends a SIP 100 Trying response
to the proxy server. The 100 Trying
response indicates that the INVITE
request has been received by User B.
F4
100 TryingProxy Server to
User A
The proxy server forwards the SIP 100
Trying to User A to indicate that the
INVITE request has been received by
User B.
F5
180 RingingUser B to Proxy
Server
User B sends a SIP 180 Ringing response
to the proxy server. The 180 Ringing
response indicates that the User B is
being alerted.
F6
180 RingingProxy Server to
User A
The proxy server forwards the 180
Ringing response to User A. User A
hears the ring-back tone indicating that
User B is being alerted.
F7
200 OK User B to Proxy
Server
User B sends a SIP 200 OK response to
the proxy server. The 200 OK response
notifies User A that the connection has
been made.
F8
200OKProxy Server to User
A
The proxy server forwards the 200 OK
message to User A. The 200 OK
response notifies User A that the
connection has been made.
F9
ACKUser A to Proxy Server
User A sends a SIP ACK to the proxy
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.

Table of Contents

Other manuals for Yealink SIP-T48G

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Yealink SIP-T48G and is the answer not in the manual?

Yealink SIP-T48G Specifications

General IconGeneral
Expansion module supportYes
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Volume control-
Display diagonal7 \
Display resolution800 x 480 pixels
Lines quantity- lines
Phonebook capacity1000 entries
Number of VoIP accounts6
AC adapter input voltage100 - 240 V
Number of handles included1 pc(s)
Weight and Dimensions IconWeight and Dimensions
Width266 mm
Height185 mm

Related product manuals