Operation Manual

146 NetWare MultiProtocol Router for ISDN 3.1 Installation and ISDN Configuration Guide
data rate. It can be used to combine several ISDN B channels to
increase the effective wire speed of 64 Kbps.
Default: Disabled
Options: Disabled, Enabled
Disabled means that only one data channel is used to establish
an ISDN connection. The other data channel(s) available on the
ISDN-Controller may be used separately by another ISDN Call
Destination for the other interface.
Enabled means that your router will try to negotiate PPP
Multilink with the remote site during LCP negotiation. If the
remote site supports PPP MP too, additional channels can be
allocated through Channel On Demand or Static Bundling.
38. Decide whether you want to use a Specific Dial-Back
Number .
If configured, the Dial-Back Number will be used by a remote
NetWare MultiProtocol Router for ISDN to call your router back
after an Inacitvity Timeout or if the parameter "Security Call-
Back" is set to "Force Call-Back to Caller-Specified Number" (see
"Expert Configuration of ISDN Interface <Interface Name>").
The number for underlying physical call set-ups/dial-backs is
normally taken from the ISDN number field of a call destination.
In some cases, it is preferable to configure a Specific Dial-Back
Number: For example, if the Area Code differs for national and
international calls, or where the number in the ISDN Number
field is not the optimum number to dial, which might be the case
in frontier areas.
When a Dial-Back Number is configured, this number is trans-
mitted to the remote site during initial call set-up, and is then
always used by the remote site for dialing back, i.e. for all subse-
quent underlying physical call set-ups.
For PPP over ISDN connections, the Dial-Back Number can be
used during LCP negotiation to request a call-back (RFC 1570,
callback option).
38a. Specify the Dial-Back Number .
Enter the Dial-Back Number to be used to call your router
back.