User`s guide

Dialogic
®
1000 and 2000 Media Gateway Series User’s Guide — September 2007 23
Dialogic Corporation
Overview
Figure 1. Typical IP Gateway Phone Emulating Topology - PBX Connection
Figure 2. Typical IP Gateway Phone Emulating Topology - PSTN Connection
Digital PBX
IP Media Gateway
(All Phone Emulating Models)
PSTN
Digital
Telephone
Digital
Telephone
VoIP
Terminal
Device
VoIP
Terminal
Device
1 - 8
Digital
Phone
Lines
LAN
or
1 - 4
T1/E1 Trunks
PIMG80LS
PBX-IP Media Gateway
or
T1/E1 IP Media Gateway
PSTN
VoIP
Terminal
Device
VoIP
Terminal
Device
LAN
1 - 8 Analog
Phone Lines
or
1 - 4 T1/E1
Trunks
Note: The T1/E1 Models must only be connected to
the PSTN through an NTU, CSU or other
device that provides line isolation.