4000 Router Series Layer 2 - WAN Configuration Guide

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Ste

Command

Remarks

8. Set the timeout value of an

ISDN L3 timer.

isdn l3-timer timer-name

time-interval

The default timeout value of an ISDN

L3 timer varies by ISDN protocol type.

For the defaults of the L3 timers in any

ISDN protocol, perform the display

isdn parameters command.

9. Set the type and code

scheme of calling or called

numbers in incoming or

outgoing ISDN calls.

isdn number-property

number-property [ calling |

called ] [ in | out ]

By default, the system selects ISDN

number type and code scheme

according to upper layer services.

10. Set the called number of

ISDN interface to send in

overlap mode.

isdn overlap-sending [ digits ]

By default, all the digits of each called

number are sent at a time.

11. Configure ISDN to include

the calling-name field in

outgoing packets.

isdn carry calling-name

By default, ISDN does not include the

calling-name field in outgoing

packets.

12. Configure ISDN to include

the connected-name field in

outgoing packets.

isdn carry connected-name

By default, ISDN does not carry the

connected-name field in outgoing

packets.

13. Configure an ISDN interface

to convert a received

progress message into an

alerting message.

isdn progress-to-alerting enable By default, this function is disabled.

Configuring call parameters of ISDN Q.931

protocols

Configuring ISDN B channel local management

Configured with the isdn bch-local-manage command, the device operates in B-channel local

management mode to select available B channels for calls. However, the connected PBX has higher

priority in B channel selection. If the B channel locally selected for a call is different from that indicated

by the PBX, the one indicated by the PBX is used for communication.

Configured with the isdn bch-local-manage exclusive command, the device operates in exclusive

B-channel local management mode. In this mode, the B channel locally selected must be used for

communication. In the Channel ID information element of the call setup message sent for a call, the

device indicates that the B channel is mandatory and unchangeable. If the connected PBX indicates a B

channel different from the locally selected one, the call fails.

It is very important to put appropriate control over B channels used for calls in process, especially in PRI

mode. Proper channel management can improve call efficiency and reduce call loss. HP recommends

that you use the management function provided by the PBX in most cases, even though the device

provides the B channel management function.

To set the ISDN B channel local management: