3Com Router Command Reference Guide Addendum for V1.2
Chapter 6 Additional ISDN Configuration
Commands
6.1 isdn ignore callednum
Syntax
isdn ignore callednum
undo isdn ignore callednum
View
ISDN BRI interface view, CE1/PRI interface view, CT1/PRI interface view
Parameter
None
Description
Using the isdn ignore callednum command, the user can disable the SETUP ACK messages if the received SETUP messages in data service calls do not carry the called number information.. Using undo isdn ignore callednum command, the router will send SETUP ACK messages.
By default, the router that is interoperating with an exchange sends SETUP ACK messages even if the received SETUP messages do not carry the called number information.
The switches of some vendors neither carry the called number information in the SETUP messages nor recognize SETUP ACK messages. In this case, a router must be disabled to send SETUP ACK messages by using this command when interoperating with the switches of such vendors.
With CE1/PRI or CT1/PRI interfaces, you must configure PRI bundling before you can configure this command in serial interface view. For more information about PRI bundling, refer to the commands
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