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English
Case 1: Making a call between Gateway A and Gateway B
Gateway B phone 203 calls to Gateway A phone 203
Caller Operation at GW B
Pick up phone 203 (204)
Dial 11203 (11204, 11800,
11801)
Ring back tone is heard
VoIP Conversation
1. GW dial tone is heard.
2. GW B Line 3 LED “ON”
1. Du Du is heard.
2. VoIP call processing
1. GW A Line 3 LED “ON”
VoIP Conversation
Pick up phone 203
Phone 203 rings
Equipment Operation
Receiver Operation at GW A
The above process is the same for Gateway B phone 203 and 204 calls to
Gateway A phone 201, 800 and 801.
Case 2: Gateway Phone to PSTN Phone
Gateway B phone 203 calls to PSTN phone A number 77771234
Caller Operation at GW B
Pick up phone 203
Dial 01-7777-1234
Ring back tone is heard
Ring back tone is heard
VoIP Conversation
1. GW dial tone is heard.
2. GW B Line 3 LED “ON”
1. Du Du is heard.
2. VoIP call processing
1. GW A Line 1 LED “ON”
2. GW A is connected to PSTN
1. PSTN call processing
VoIP Conversation
Receiver on 77771234 picks up
Phone 77771234 is ringing
Equipment Operation
Receiver Operation at GW A
The above dialing process is the same for phones 203, 204 to any GW A local
PSTN phone number.
