Paradyne HOTWIRE 7924 User Manual page 23

Customizing DSX-1-Compatible Units
You must reset the board for changes to the card type or loops enabled
(options 1 or 2) to take effect. A system message is displayed on the terminal to
remind you to reset the board. To reset the board, use option 4 from the Main
Menu. (The board may also be reset by cycling the power on the board.) All
configuration settings are stored in nonvolatile memory.
The HDSL rate type, firmware revision numbers, and the serial number displayed
on the Board Configuration screen cannot be changed.
4-4
Table 4-1. DSX-1-Compatible Units Configuration Options (2 of 2)
3) T1 Line Encode
Possible Settings: B8ZS, AMI
Default Setting: B8ZS
Specifies the type of line encoding used to ensure one's density in the transmission
signal. To toggle the encoding method, enter 3 at the Config prompt.
B8ZS – Binary 8 Zero Substitution.
AMI – Alternate Mark Inversion.
4) Framing
Possible Settings: D4, Extended Superframe, Unframed
Default Setting: D4
Specifies the type of framing to be used. To toggle the framing method, enter 4 at the
Config prompt.
D4 – Commonly used framing method on T1 circuits, consisting of 12 frames of 192 bits
with the 193rd bit used for error checking and other functions. Also called Super
Framing.
Extended Superframe – Framing method consisting of 24 frames of 192 bits each, with
the 193rd bit providing timing and other functions. An enhanced version of D4.
Unframed – Framing is disabled (unsupported at this time).
5) Line Build Out
Possible Settings: 0 to 133 ft, 133 to 255 ft, 266 to 399 ft, 399 to 533 ft, 533 to 699 ft
Default Setting: 0 to 133 ft
To change the line build-out length, enter 5 at the Config command prompt. You will
then be prompted to select from the following options:
1) 0 to 133 ft
2) 133 to 255 ft
3) 266 to 399 ft
4) 399 to 533 ft
5) 533 to 699 ft
N) No change
NOTE: Additional options may be displayed on your terminal. These other options
(for –7.5, –15, and –22.5 dB) are not designed for use with this product.
Use of these other options will cause a weak signal and degrade
performance. Select from options 1 through 5 only.
June 1997 7924-A2-GB20-10
PRELIMINARY DRAFT