The GPZ-4LC( ) and GPZ-8LC( ) daughter boards are mounted on the
GCD-4LC( )/GCD-8LC( ). These boards provide:
 4-Port Single Line and 8-Port Single Line analog extension ports
(used for on-premise analog telephones, fax machines, and analog
modems).
 The GCD-4LC( )/GCD-8LC( ) is not rated for OPX use. A
GCD-4DIOPB blade should be used instead (it supports the analog
DID and single line telephone interface functions, such as Off-
Premise Extensions).
 Connector for GCD-4LC( )/GCD-8LC( ) Blades
 Ring Generator
 Caller ID Sending Ability
 Message Wait Lamp Ability
 Constant current type battery feeding (25mA / -28Vdc)
 Feeding Polarity Reverse Ability