rut
northern
tukcom
PRACTICE 553-2201-183
Issued: 88 08 10
Standard
INTEGRATED SERVICES NETWORK
MERIDIAN
SL-i.
500/2500
LINE PACKS
DESCRIPTION AND OPERATION
CONTENTS
PAGE
1.
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.._.....
1-1
2.
DESCRIPTION
2-1
3.
APPLICATION 3-1
4.
CHARACTERISTICS 4-1
Functional
..,.,....._..,,
,,.
_.,.
4-1
Technical Summary
4-3
Limitations 4-4
Power Requirements 4-4
Environmental
4-6
Foreign and Surge Voltage Protection
4-6
Overload Level
4-6
5.
OPERATION 5-1
Idle Circuit State
5-l
Call Originated from a
500/2500
Telephone
5-1
Call to Telephone
5-2
Message Waiting Lamp Operation 5-3
Ground Button Operation 5-4
Class of Service and Features
5-5
Reason for Reissue: This practice is reissued to include
information related to the QPC789
16-Port
Message Waiting
c
500/2500
Line circuit pack. Changes are indicated by margin arrows.
c
Prlnred
I”
LISA
’
Northern
T&corn
1983
Page i
1 Page