User Guide

Voice Gateway / Pocket Voice Gateway 49
7.3.4 VoIP Voice Gateway to VoIP Networks with PSTN line
The voice gateway of also support FXO interface to PSTN world directly.
Three models of voice gateway support this function. AVG6001BA and
AVG6001BD support one FXO interface. AVG6004BA support four FXO
interfaces. Here is the example to support PSTN line and you can dial to
traditional phone using our VoIP voice gateway.
Due to the variety of telephony specification, the FXO interface of voice
gateway has to commit the specification very well. For example, you have
to setup the call progressive tone of the PSTN line from Telephone compa-
nies or PBX. Please contact to our Technical Service to inquire the details
specification of PSTN line in different countries and different PBX.
a. The function of P2 (or P3 and P4 in 4 ports model) is as same as all the
examples above.
b. To provide PSTN backup functionality, you can use inner conference
call to make a PSTN phone out. Just dial ***1, you can hear the second
tone. Then you can dial the E.164 telephone number to real PSTN world.
User can also configure the PSTN line port using E.164 number, for
example 1011. Then after all other VoIP phone dial to 1011, the second
tone can be hear. Then user can also dial the telephone number to PSTN
world. Here, this voice gateway can be treated as a translation (so called
gateway) between VoIP phone and PSTN phone.
c. Vice verse, the user at PSTN world can dial to this PSTN line. After
second ring, the voice gateway will pick up the phone and send the sec-
ond dial tone again. Then user can also dial to VoIP phone using IP
address or E.164 telephone number that is described in previous section.
7. System Operation
DC POWER Reset
Console
LAN WANLine P2 P3 P4
PC
PHONE 2
POWER
PHONE 3
PSTN
VoIP
Networks
Splitter