3Com 3C8S5007 - SuperStack II PathBuilder S500 Switch User Manual page 61

3 Set the LineEncoding as appropriate for your setup using:
SETDefault !<path> -PAth LineENCoding = B8ZS | AMI | HDB3
where <path> = 4A, 4B, 4C, or 4D.
The LineENCoding parameter specifies the transmission encoding
method for a serial line. The coding method you specify for the serial line
must match the attached communication device. AMI or B8ZS should be
used for T1 connectors and HDB3 should be used for E1 connectors. NRZ
and NRZI are not valid options on Ultra-WAN interfaces.
4 Set the LineDistance as appropriate for your setup using:
SETDefault !<path> -PAth LineDistance = LH1|LH2|LH3|LH4|SH1|SH2|
SH3|SH4|SH5|SH7
The LineDistance parameter determines the supported long haul (LH) or
short haul (SH) line distance. For T1 lines both long haul and short haul
settings are supported. Further granularity is provided in units of dB for
long haul, and in units of feet for short haul.
For E1 lines, only short haul is supported. Use SH7 for E1 lines.
LH1 T1 0 dB
LH2 T1 7.5 dB
LH3 T1 15 dB
LH4 T1 22.5 dB
SH1 T1 0-133 feet
SH2 T1 133-266 feet
SH3 T1 266-399 feet
SH4 T1 399-533 feet
SH5 T1 533-655 feet
SH7 E1 G.703 120 Ohm
5 Enable the connector, using:
SETDefault !<path> -PAth ConnControl = Enabled
Connector parameter settings are not applied until the connector is
enabled.
Configuring the Ultra-WAN CSU/DSU Interfaces 61