Alcatel OmniPCX Office - Page 456

SERVICES AND TOPOLOGIES CALL SERVER : VOICE ON IP
Ed. 0410/12 Réf. 3EH 21000 BSAA
IP telephony in an extended Intranet
Nota : See also the Home Worker and Remote Worker topologies described earlier.
PIMphony IP through RAS (Remote Access Server)
The RAS is equipped with a pool of modems or a T0 / T2. The RAS client PC is authenticated by a PAP/
CHAP authentication procedure, then is called back by the RAS (call back).
LAN
Pimphony IP
Pimphony IP
R
Alcatel OmniPCX
IP ENABLER
@IP
IP ENABLER
IP ENABLER
R
Company
ISDN / PSTN
R/F:
IP/Firewall router with permanent
connection (leased line, ADSL,
modem cable) +VPN Server
Permanent
connection
RAS : Remote Access Server
LAN
Pimphony IP
Pimphony I
P
IP ENABLER
IP ENABLER
RAS
ISDN / PSTN
Company
ISDN / PSTN
Alcatel OmniPCX