Westermo ID-90 - Manual (Page 62)

Call Bumping
A ML-PPP connection uses both B-channels of the S bus. To accept an incoming call
(i.e. for telephony) during a ML-PPP session one B-channel has to be released. This is
called Call Bumping.
To enable Call Bumping proceed as follows:
• Activate call waiting on the S bus. It has to be activated in the ISDN switch and is
a feature of the ISDN line you ordered.
• Open the “properties” of the dial-up link you are using for ML-PPP and “additional
settings”. Input “at**cmlp=1” as an additional parameter.
• If there is an incoming call during a ML-PPP session the TA will drop one B-chan-
nel and an ISDN telephone attached to the S bus will be ringing to accept the call.
Bandwidth on demand (“BOD”)
Enabling this feature will cause the TA+POC to use the multilink PPP protocol to enhance
the ISDN throughput using the second B channel automatically:
• If the throughput of the internet connection is higher than a definable value a second
B channel connection will be established automatically and for data transfer used.
• If the throughput of the internet connection is lower than a definable value the sec-
ond B channel connection will be disconnected automatically.
See commands bod, bodiv, bodit, boddv and boddt.
Note: call bumping (cmlp) has higher priority than bandwidth on demand.
X.25 address translation table
With every outgoing X.25 call the ISDN number will be taken out of the corresponding
entry table in xtab.
If no entry is found the X.25 address will be used as the ISDN number.
When an ISDN number is setup in the dialling command string with AT commands or X.3
PAD commands, the xtab entries will not be used.
If an ISDN number is setup using the command dad, the table xtab will not be used.
xtabx <xadr>I<nn/ss> set entry number x to ISDNnumber nn/ss
and X.25 address xadr
The X.25 address can contain wildcards:
* : represents one or more digits
? : represents exactly one digit
xtabx - clear entry number x
xtabx show entry number x
xtab Show all entries
Maximum number of entries = 5; x = 1..5
Maximum length of ISDN number = 20 digits
Maximum length of subaddress = 20 digits
Note: The table is valid for X.25 in B channel and X.31D rerouting only.
Examples: xtab1 45400029003i04089928392
62 6607-2204