Meridian America 21 Manual De Usuario

4.09 A technical summary of the line circuit pack is given in Table
4-A.

Impedance:

 

 

QPC532

600 
600 

900 

600 

 matches 3-component complex

impedances

Loop Limit (excluding set):

All others

1400   at nominal -48 V
1000   at nominal -48 V

Leakage Resistance
QPC532
All others

Ring Trip

Ringing Voltage

Signaling

Supervision

Power input from shelf backplane

Insertion loss

Effective Gain 

20,000 
30,000 

During silent or ringing intervals

Determined by the type of ringing generator
provided in the system

Loop start

Normal battery conditions are continuously
applied 

 V on ring: ground on tip)

- -

-52, -48, i-6, -6, i-2.5 V and ringing voltage:
also -150 V on Message Waiting Line cards.

5, 

 

 at 1020 Hz

1.5 

 at 1020 Hz