Avaya Configuring WAN Line Services Manual do Utilizador Página 89

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Configuring HSSI Services
117021-A Rev. A 5-5
You can set the external clock speed to a rate from 307200 to 52638515 bytes/s.
Select a value equal or close to the data transmission rate across the HSSI. By
default, the HSSI clock rate is 46359642 (44.736 MB/s).
Setting the CRC Size
CRC size specifies an error detection scheme. You can choose either 16-bit
(standard ITU-T) or 32-bit (extended) to detect errors in the packet. The remote
end of the HSSI connection must be configured for the same CRC size.
You can set the CRC Size for this HSSI interface.
Setting the Carrier Loss Debounce Timeout
The Carrior Loss Debounce Timeout determines how many seconds the line driver
waits after losing the carrier signal before transitioning to the Carrier Lost state. If
the carrier signal returns prior to reaching this threshold, the driver never enters
Carrier Lost.
For most lines, you want the driver to immediately transition to Carrier Lost state
upon detecting carrier loss. For a problem line, however, you can enter a number
of seconds for the router to sense carrier loss before entering Carrier Lost state.
By default, the value is zero (0) seconds. Set the Carrier Loss Timeout from 0 to
2147483647 for this HSSI interface.
Site Manager: External Clock Speed parameter: page A-14
Site Manager: CRC Size parameter: page A-15
Site Manager: Carrier Loss Debounce parameter: page A-15
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