User's Manual

Avaya Branch Gateway Manager 10.0 Page 347
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
Configuration Settings: RAS
5.11.1 PPP
PPP (Point-to-Point Protocol) is a Protocol for communication between two computers using a Serial interface, typically a
personal computer connected by phone line to a server.
Usability
· Mergeable: These settings are mergeable. Changes to these settings do not require a reboot of the system.
Configuration Settings
· CHAP Challenge Interval (secs): Default = 0 (disabled). Range = 0 to 99999 seconds.
The period between successive CHAP challenges. Blank or 0 disables repeated challenges. Some software, for example
Windows 95 DUN, does not support repeated CHAP challenges.
· Header Compression: Default = Off
Enables the negotiation and use of IP Header Compression as per RFC2507, RFC2508 and RFC2509.
· PPP Compression Mode: Default = MPPC
This option is used to negotiate compression (or not) using CCP. If set to MPPC or StacLZS the system will try to
negotiate this mode with the remote Control Unit. If set to Disable CCP is not negotiated.
· Disable
Do not use or attempt to use compression.
· StacLZS
Attempt to use and negotiate STAC compression (the standard, Mode 3)
· MPPC
Attempt to use and negotiate MPPC (Microsoft) compression. Useful for dialing into NT Servers.
· PPP Callback Mode: Default = Disable
· Disable:
Callback is not enabled
· LCP: (Link Control Protocol)
After authentication the incoming call is dropped and an outgoing call to the number configured in the Service will be
made to reestablish the link.
· Callback CP: (Microsoft's Callback Control Protocol)
After acceptance from both ends the incoming call is dropped and an outgoing call to the number configured in the
Service is made to reestablish the link.
· Extended CBCP: (Extended Callback Control Protocol)
Similar to Callback CP however the Microsoft application at the remote end will prompt for a telephone number. An
outgoing call will then be made to that number to reestablish the link.
· Data Pkt. Size: Default = 0. Range = 0 to 2048.
This is the number of data bytes contained in a Data Packet.
· BACP: Default = Off
Allows negotiation of the BACP/BCP protocols. These are used to control the addition of additional B channels to
simultaneously improve data throughput.
· Multilink: Default = Off
When enabled the system attempts to negotiate the use of the Multilink protocol (MPPC) on the link(s) into this
Service. Multilink must be enabled if the more than one channel is allowed to be Bundled/Multilinked to this RAS
Service.