Chapter 11: ATM Cards
ATM Line Parameters
SmartBits System Reference
161
•
Errored Cells Handling
. Specifies the action to take for cells with errors. Possible
values:
–
Drop Errored Cells –
Drops all cells that have a header error as determined by the
HEC byte.
–
Receive Errored Cells –
Receives all cells even if they have errors.
–
Receive and Correct Errored Cells –
This option does not apply to the AT-9025
SmartCard. Receives and when possible corrects all cells with single-bit header
errors. Drops any cells that cannot be corrected.
•
Buildout
. This field applies only to the AT-9015 DS1 and AT-9045B DS3 SmartCard.
Select to change the electrical output of the SmartCard to either (1) accommodate the
length of the cable that you are testing or (2) specify the amount of attenuation to
apply to the signal.
–
AT-9015 DS1. Possible values for cable lengths:
<=133 Feet. Pulse shaping for cable lengths up to 133 feet.
>133, <=266 Feet
.
Pulse shaping for cable lengths more than 133 feet and up to 266
feet.
>266, <=399 Feet. Pulse shaping for cable lengths more than 266 feet and up to 399
feet.
>399, <=533 Feet. Pulse shaping for cable lengths more than 399 feet and up to 533
feet.
>533, <=655 Feet. Pulse shaping for cable lengths more than 533 feet and up to 655
feet.
–
Possible values for attenuation values:
-7.5 dB. Pulse shaping to generate -7.5 dB of attenuation.
-15.0 dB. Pulse shaping to generate -15.0 dB of attenuation.
-22.5 dB. Pulse shaping to generate -22.5 dB of attenuation.
–
AT-9045B DS3 Possible cable length values:
<= 225 Feet. Pulse shaping for cable lengths up to 225 feet.
>225 Feet. Pulse shaping for cable lengths more than 225 feet.
•
Line Encoding
. This field applies only to AT-9015 DS1 and AT-9020 E1 SmartCards.
Select the type of encoding to be used for the line. Possible values:
–
AMI –
Uses AMI line encoding (not supported by the ATM Forum).
–
B8ZS –
DS1 mode using B8ZS line encoding. (AT-9015 only).
–
HDB3 –
E1 mode using HDB3 line encoding (AT-9020) only.
•
Line Framing
. This field applies only to the AT-9015 SmartCard. Select the framing
mode for the physical layer. Possible values:
–
D4 –
Uses D4 line framing (not supported by the ATM Forum).
–
ESF –
Uses Extended Super Frame line framing.
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