User's Manual

Avaya Branch Gateway Manager 10.0 Page 361
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
Configuration Settings: WAN Port
5.13.5 PPP
Fields in this tab enable you to configure Point to Point Protocol (PPP) in relation to this particular service. PPP is a
protocol for communication between two computers using a Serial interface.
Usability
· Mergeable: These settings are not mergeable. Changes to these settings will require a reboot of the system.
Configuration Settings
· Chap Challenge Interval (secs): Default = 0 (disabled). Range = 0 to 99999 seconds.
The period between CHAP challenges. Blank or 0 disables repeated challenges. Some software such as Windows 95
DUN does not support repeated CHAP challenges.
· Bi-Directional Chap: Default =Off.
· Header Compression: Default = None selected
Enables the negotiation and use of IP Header Compression. Supported modes are IPHC and VJ. IPHC should be used
on WAN links.
· PPP Compression Mode: Default = MPPC
Enables the negotiate and use of compression. Do not use on VoIP WAN links.
· Disable
Do not use or attempt to use compression.
· StacLZS
Attempt to use STAC compression (Mode 3, sequence check mode).
· MPPC
Attempt to use MPPC compression. Useful for 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 is
made to re-establish 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 re-establish the link.
· Extended CBCP: (Extended Callback Control Protocol)
Similar to Callback CP except the Microsoft application at the remote end prompts for a telephone number. An
outgoing call is then made to that number to re-establish the link.
· PPP Access Mode: Default = Digital64
Sets the protocol, line speed and connection request type used when making outgoing calls. Incoming calls are
automatically handled (see RAS services).
· Digital64
Protocol set to Sync PPP, rate 64000 bps, call presented to local exchange as a "Data Call".
· Digital56
As above but rate 56000 bps.
· Voice56
As above but call is presented to local exchange as a "Voice Call".
· V120
Protocol set to Async PPP, rate V.120, call presented to local exchange as a "Data Call". This mode runs at up to 64K
per channel but has a higher Protocol overhead than pure 64K operation. Used for some bulletin board systems as it
allows the destination end to run at a different asynchronous speed to the calling end.
· V110
Protocol is set to Async PPP, rate V.110. This runs at 9600 bps, call is presented to local exchange as a "Data Call".
It is ideal for some bulletin boards.
· Modem
Allows Asynchronous PPP to run over an auto-adapting Modem to a service provider (requires a Modem2 card in the
main unit)
· Data Pkt. Size: Default = 0. Range = 0 to 2048.
Sets the size limit for the Maximum Transmissible Unit.