Alcatel Speed Touch Wireless User Manual page 106

7 Data Services - PPPoA to PPTP Relaying
The 'Active PPTP
Connections' table
'Active PPTP
Connections' table
components
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The following figure shows the 'Active PPTP Connections' table:
The following fields are shown:
Field Description
Dial string Indicates the name you have chosen for the PPTP connection.
Note: In your Dial Up application you are able to specify which
PPTP connection is to be used by adding the appropriate
Dial string, indicated here.
Destination Indicates the PPTP phonebook entry name, active for this
connection.
Qos Indicates the Quality of Service (QoS) applicable for the
PPPoA/PPTP connection. In most cases the QoS column will
indicate
Encap Refers to the encapsulation, and decapsulation of PPP frames
in/from AAL5/ATM. The STWireless is compliant with RFC 2364
PPP over AAL5" and supports both the LLC/NLPID method and
the VC MUX method. By default the encapsulation method for
PPP frames is VC MUX.
The encapsulation method for a PPPoA/PPTP connection can be
configured via the CLI, see section 7.5 for more information.
HDLC The PPP frames arriving via a PPTP tunnel, and the PPP frames
encapsulated on ATM connections, differ in format.
Framing
The PPP format on AAL5 follows RFC 1661 Point to Point
Protocol (PPP)":
Whereas the PPP format within a tunnel follows Point to Point
Tunneling Protocol (PPTP)":
Address
(FF)
The latter format has two additional bytes in front of the frame
(FF 03) inherited from another encapsulation i.e., RFC 1662
PPP in HDLC like framing".
. Via CLI a specific QoS can be configured.
default
PPP Frame
P_ID Information
Control P_ID
(03)
Padding
PPP Frame
Information Padding
3EC 17766 AAAA TCZZA Ed. 01