PairGain 150-1141-05, Manual, Page: 71 / 78

150-388-105-05, Revision 05 Appendix C - Compatibility
HLU-388 List 5 March 25, 2000 63
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-388 List 5 is compatible with the following DDM+ T1 repeater shelves and associated equipment:
•
PairGain HCS-402, two-slot shelf with #150-1193-01 adapter
•
Shelf (23-inch)
–
Larus FT2 1188 (28-slot, connectorized)
–
AT&T DS1 Ext. (28-slot, connectorized)
•
Shelf (19-inch)
–
Larus FT21187 (20-slot, connectorized)
•
Cabinet Distant Terminal (23-inch)
–
Larus FT2 1190 (12 slots) for a 51A cabinet.
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 to realize these enhancements.
Enhanced doubler applications preclude the mixing of newer doubler models with older models of the
HRU and HLU.
Table 26 on page 64 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.
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.