Filter
Top Products
570 CHAPTER 37: ISDN CONFIGURATION COMMANDS
the router selected for a call is different from the one indicated by the exchange,
the one indicated by the exchange is used for communication.
Configured with the isdn bch-local-manage exclusive command, the router
operates in exclusive local B-channel management mode. In this mode, the B
channel selected by the router must be adopted for communication. In the
Channel ID information element of the call Setup message sent for a call, the
router indicates that the B channel is mandatory and unchangeable. If the
connected exchange indicates a B channel different from the one selected by the
router, call failure occurs.
Example # Enable interface BRI 2/0 local ISDN B channel management.
<Sysname> system-view
[Sysname] interface bri 2/0
[Sysname-Bri2/0] isdn bch-local-manage
isdn bch-select-way
Syntax isdn bch-select-way { ascending | descending }
View ISDN interface view
Parameter ascending: Selects B channels in ascending order.
descending: Selects B channels in descending order.
Description Use the
isdn bch-select-way command to set a B channel selection method but
it does not work when the switch manages ISDN B channel. Meanwhile, the
setting of isdn bch-select-way is a waste without configuring isdn
bch-local-manage command on the user side.
When operating in B channel local management mode, the router selects B
channels in ascending order by default.
Example # Configure B channel selection method on the interface BRI 2/0 to descending
order.
<Sysname> system-view
[Sysname] interface bri 2/0
[Sysname-Bri2/0] isdn bch-select-way descending
isdn caller-number
Syntax isdn caller-number caller-number
undo isdn caller-number
View ISDN interface view