Figure 5-3 Call Flow Of A Sip Call Originating From The Ont - Alcatel-Lucent 7330 Product Information Manual

5 — VoIP overview
Figure
5-14

Figure 5-3 Call flow of a SIP call originating from the ONT

Phone
Off hook
Send dial tone or stutter tone
First digital dialed
Stop dial tone/stutter tone
Remaining digits dialed
Send ring back tone
Stop ring back tone
5-4 shows the call flow for a SIP call that is terminated at the ONT.
March 2011
ONT Product Information Guide Edition 01
ONT
INVITE (collected digits)
PRACK
ACK
Speech path established
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.42a
Softswitch
100 TRYING
180 RINGING
200 OK (PRACK)
200 OK (INVITE)
18585
3FE 54199 AAAA TCZZA