Alcatel Speed Touch Wireless, User Manual

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What is PPPoAĆtoĆPPTP
Relaying
PPPoA/PPTP overview
architecture
7 Data Services - PPPoAĆtoĆPPTP Relaying
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3EC 17766 AAAA TCZZA Ed. 01
7.6.3 PPPoAĆtoĆPPTP Relaying (PPPoA/PPTP)
By opening a PPPoA/PPTP session, PPTP tunnels are established
between the STWireless and the PCs on your (W)LAN.
These PPTP tunnels trigger the Relaying utility of the STWireless : it
chooses a free VC from the pool of available free PPP phonebook
entries and relays all PPP frames, sourced by the PPTP tunnel from
the tunnel to the VC, and vice versa.
At the remote end of the VC, i.e. ADSL line, the remote access
server extracts the PPP frames, reconstructs the encapsulated IP
packets and forwards them to their destination, e.g. the Internet.
At the end of a PPPoA/PPTP session, the PPTP tunnel is destroyed.
This triggers the STWireless 's Relay utility to release the VC.
The figure below provides an overview of the endĆtoĆend
architecture.
Local PPTP
Tunnels
Ethernet
(W)LAN
Corporate Access Point
Remote LAN
ISP Access Point
INTERNET
Bundled ATM VCs
PPP RELAY
ATM Network