User Manual

VIP User’s Manual
Application Samples
41
2.Gateway A is connected to
PSTN
Dial 12345678 1.PSTN communication is going Phone [phone] is ringing
Ring back tone is heard Phone [phone] is ringing
Phone [phone] picks up
Enjoy VoIP Enjoy VoIP
The above process is the same as Gateway A phone 200 (201, 800,801) calls to phone A number (03)
12345678
Case 3: PSTN Phone to Gateway Phone,
Phone A number [phone] calls to Gateway B phone 551
Human operation at Phone A,
Caller side
Equipment operation
Human operation at Gateway B
phone 551, Receiver Side
Pick up phone A 1.PSTN dial tone is heard.
Dial 87654321 1.Communication is going
2.PBX plays voice greeting
Dial 889
1.The first LED lights in green color
in slot B of front panel.
2.VIP dial tone is heard
Dial 551 1.Du Du is heard
2.VoIP Communication is going
Ring back tone is heard
1.The second LED is lighting in slot
A of GW B front panel.
Phone 551 is ringing
Pick up phone 551
Enjoy VoIP Enjoy VoIP
The above process is the same as Phone A calls to phone numbers 200, 201, 800, 801 or 550
5.4 Building up voice communication via VIP in Dynamic IP environment
Previous section shows the steps how to build up a VIP-to-VIP connection in static IP address
environment. This section we will shows you how to connect two VIPs in a dynamic IP address