Polycom V2IU 4350 - Manual (Page 22)

User Manual V 2 IU 4350 Converged Network Appliance
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Configuration Guide For Station Side IP PBX Applications
Most private enterprise VoIP networks use an IP PBX at the corporate
headquarters location to provide voice switching between headquarters,
branch offices and the PSTN. The 4350 is used in these environments to
securely connect branch office employees to the IP PBX installed in the
corporate headquarters location.
The installation of an 4350 on the station side of an enterprise IP PBX is very
similar to the IP Centrex application above. The branch office is connected to
the corporate network using a private T1/E1 link connected directly to the
WAN port of the 4350. The LAN port(s) of the 4350 are connected directly to
enterprise devices and/or Ethernet switches.
enable Call Admission Control Optional
IP PBX
Gateway
4300T
4300T
4300T
PSTN
EM004
Headquarters
Branch Office Branch Office
T1
T1/FT1 T1/FT1
4350
4350
4350