150-231-185-05, Revision 05
Appendix C - Compatibility
HLU-231 List 8E
September 13, 1999
61
A
PPENDIX
C - C
OMPATIBILITY
The HiGain system uses HDSL transmission technology as recommended by Bellcore TA-TSY-001210. The
HiGain system complies with GR-63-CORE, TR-TSY-000499, and GR-1089-CORE.
T1 R
EPEATER
S
HELVES
AND
R
ELATED
E
QUIPMENT
The HLU-231 List 8E is compatible with the following T1 repeater shelves and associated equipment:
•
PairGain HCS-417 (23”)
•
PairGain HCS-418 (19”)
•
PairGain HCS-402 (2-slot))
•
AT&T 220 Office Repeater Bay (ORB)
•
AT&T Small Cross Section Shelf (SXSS)
•
Kentrox 220 (The ALM option must be Disabled (DIS) to resolve a conflict between the HLU alarm relay
output and the Kentrox external equalizer output. Both use pins 20 and 21.)
•
Wescom
®
342-30
H
I
G
AIN
D
OUBLER
C
IRCUIT
D
EPLOYMENT
All generations of HiGain HLU and HRU modules are compatible with each other. Although all HiGain doublers
are backward-compatible with all prior HLU and HRU models, some of the circuit application enhancements of
newer doubler models require that all circuit modules be of the same vintage in order to realize these
enhancements. Enhanced doubler applications preclude the mixing of newer doubler models with older models of
the HRU and HLU.
provides a matrix of HiGain doubler deployment rules to achieve maximum circuit
enhancement. It lists:
•
Maximum number of doublers allowed for a given circuit, depending upon the doubler and line unit models
used to implement the circuit.
•
Any restrictions on the HRU models.
The ALM option must be disabled (DIS) when using the Kentrox 220 T-Term shelf. This is
required to resolve a conflict between the HLU alarm relay output and the Kentrox external
equalizer output. Both use pins 20 and 21.
All spans are fully CSA-compliant unless otherwise specified. Circuits that use more than one
type of doubler are governed by the most limiting doubler rules. For example, if the HDU-451 is
used with the HDU-409, use the HDU-451 deployment rules.
