Avaya Configuring Dial Services Manual de usuario descargar pdf (Pagina 220)

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101

Configuring Dial Services

11-16

308621-14.00 Rev 00

Modifying LAPD Transmission Units

specify the maximum number of bytes per LAPD transmission unit, enter:

mtu

integer

is a value from

3 to 1024 bytes.

For example:

bri/1/1#

mtu 500

Nortel Networks recommends that you accept the default, 400 bytes.

Activating ISDN S/T and U Interfaces

You can set the BRI T3 timer which indicates the amount of time that the router

has to try and activate the ISDN S/T or U interface (ARN only). The router starts

this timer when the ISDN interface is deactivated and the router tries to activate it,

for example, when the router wants to send data. During this period, the router

sends INFO 1 frames across the ISDN interface until the network responds with a

signal or the timer expires. This timer prevents the router from attempting to

activate the ISDN interface interminably.

To modify the T3 timer, enter:

t3-timer

integer

is a value from 1 to 30 seconds.

For example:

bri/1/1#

t3-timer 10

The

t3-timer

parameter should be greater than the time it takes to activate the

ISDN interface under normal conditions. Ask your ISDN provider for guidelines

regarding the subscriber loop transmission, which may affect the value you set.

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