User`s guide

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Configuration – Network > Interfaces > Advanced > PPP n > Multilink PPP
As mentioned above, the routers may 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 value in this textbox defines 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 value in this textbox defines the ACCM for the remote peer. As above, the default value
of 0xffffffff should work in most cases and should only be changed if it is known that other
characters should be used.
Username
The value in this textbox is the username that should be used for logging on to the remote
system.
Password
The value in this textbox is the password that should be used for authentication with the
remote system when using MLPP. This password is used for both B-channel PPP
connections.
Confirm password
When changing the password, the new password should also be typed into this text box.
The router will check that both fields are the same before changing the value.
Enable remote CHAP authentication
When checked, this checkbox 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 checkbox should be left unchecked.
Enable short sequence numbers
When checked, this checkbox enables the use of 12-bit, rather than the more usual 16-bit
data packet sequence numbers.
Bring up the second ISDN B-channel
Never
When selected, this radio button will cause the router not to activate the second B-channel.
When the data rate is greater than n bytes/sec for s seconds
When this radio button is selected, the two associated textboxes 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 this radio button is selected, the second B-channel is only deactivated when the
connection is terminated.