Digi TransPort WR11 User Manual page 361

Configuring network interfaces
Multilink PPP parameters
Some TransPort routers support multilink PPP. This section describes the configuration of MLPP
functionality.
The PPP interface must be configured with Always On mode enabled and an AODI NUA.
Desired local ACCM c
The Asynchronous Control Character Map (ACCM). The default value of 0x00000000 should work in
most cases. Changing this value is for advanced users only.
Desired remote ACCM c
The ACCM for the remote peer. As above, the default value of 0xffffffff should work in most cases and
should only be changed if you know you need to use other characters.
Username
The username for logging on to the remote system.
Password
The password for authentication with the remote system when using MLPP. This password is for both
B-channel PPP connections.
Confirm password
When changing the password, type the new password into this text box. The router checks that both
fields are the same before changing the value.
Enable remote CHAP authentication
When enabled, causes the router to authenticate itself with the remote system using CHAP. If this
parameter is set, the connection will fail if authentication fails. Generally, this setting should be left
disabled.
Enable short sequence numbers
When enabled, enables the use of 12-bit data packet sequence numbers, rather than the more usual
16-bit data packet sequence numbers.
Bring up the second ISDN B-channel
Never
When selected, causes the router not to activate the second B-channel.
When the data rate is greater than n bytes/sec for s seconds
When selected, the two associated text boxes become enabled and allow the user to enter the
desired data rate (default 2000 bytes/second) that will trigger activation of the second B-channel and
the period for which the data rate exceeds that value, before the channel is activated.
Drop the second ISDN B-channel
When the connection is terminated
When selected, the second B-channel is only deactivated when the connection is terminated.
When the data rate is less than n bytes/sec for s seconds
When selected, the above two text boxes are enabled. The value in the left-hand one specifies the
data rate below which the traffic must fall before the secondary B-channel will be deactivated. The
Digi TransPort® Routers User Guide
Configure PPP and external modems
361