Cisco 3640 Series 사용자 설명서 - 페이지 26

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Command Reference

isdn modem-busy-cause

Use the isdn modem-busy-cause command to specify an error cause code that is returned when all

modems in the modem pool are busy and unavailable to accept an incoming call. Use the no form of

this command to disable this feature.

isdn modem-busy-cause {number | busy | not available}

no isdn modem-busy-cause

Syntax Description

number

busy

not available

Default

If the command is not used and all modems in the pool are busy, error cause code "21" (call rejected)

is sent as the error message.

Command Mode

Interface conﬁguration

Usage Guidelines

This command ﬁrst appeared in Cisco IOS Release 11.1 when it was available for PRI interfaces. It

became available for BRI interfaces in Cisco IOS Release 12.0(2)XC and Cisco IOS

Release 12.0(3)T.

Using this command distinguishes call errors due to busy modems from other call errors (for

instance, busy B channels) that might return the same ISDN default error code of 21.

Example

The following example conﬁgures an error cause code of "47" (resources unavailable) to be returned

when no modems in a pool are available:

interface BRI 1/1

Cisco IOS Release 12.0(3)T

Speciﬁes an ITU Q.931 standard error cause code of up to three digits,

from 1 to 127.

Speciﬁes that the modem reports "USER BUSY" as the error message to

the switch.

Speciﬁes that the modem returns "CHANNEL NOT AVAILABLE" as

the message to the switch.

isdn modem-busy-cause 47