Mitel SX 200 ML PABX Instructions Guide

8 Loss and Level Plan 
General 
8.1 This part describes the loss and level plan for North American applications. A large 
number of interconnections are possible, ranging from interconnections between 
on-premises (ONS) line circuits, to the interconnection of remotely located satellite 
PABXs with this PABX. This part describes the principles of the loss and level plans, 
their application to the PABX, and the arrangements for setting the transmission 
levels. 
North American Loss and Level Plans 
8.2...

Engineering Information 
LOCAL TOLL (OR HIGHER) 
TOLL (OR MGHER) LOCAL 
co OFFICE 
OFFICE co 
TOLL-CONNECTING INTER TOLL TRUNKS 
TOLL-CONNECTING 
TRUNK (2W ANALOG) 
TRUNK (2W ANALOG) 
cc0100 
Figure 8-l Local to Local Central Offices VNL Objectives 
LOCAL 
LOCAL 
co 
Figure 8-2 Local to Local Central Offices Fixed Loss Plan Objectives 
Loss And Level Plan 
The loss and level plan used for the PABX is illustrated in Figure 8-3. This layout is 
not intended to be a typical network, but is drawn to show the...

Loss and Level Plan 
Table 8-i explains the terms used for the different types of peripheral interfaces. 
Circuit 
Ref 
ONS 
ONS(D) 
OPSS 
OPSL 
AC0 
ACO(D) 
ACO( D) 
AT0 
ATO 
ATO 
ATT 
Dl-r 
Tl Trunk 
Cll- 
sAlT This designation refers to a “satellite” tie trunk which connects a Main PBX 
sD-i-r to a Satellite PBX. The type of trunk cards used to interface are the same 
scn- 
as those for the AlT, DTT, and ClT interfaces described above. 
Table 8-l Interface References 
Description Card Type 
(Part...

Engineering Information 
Satellite PABX 
8-4 A satellite PABX (shown in Figure 8-3) is defined as a PABX which has no direct 
connection to the serving central office for incoming traffic. It has no directory number, 
and receives all incoming calls through the main PABX over satellite trunks. The sat- 
ellite PABX is usually in the same local area as its main PABX. Note that the Loss 
Plan differs for SATELLITE” trunks in the main PABX from “SATELLITE” trunks in the 
satellite PABX. 
Analog Transmission...

Loss and Level Plan 
ONS 
OPS 
SSA 
TOLL 
sx-200 
MAIN 
PABX SAi7 - OFFICE 
- ONS 
SAlT 
cc0097 
ONS 
4 
Ops+ S;L22E 1 
ss4 
ATN 
March 1997 
Figure 8-3 Types of Trunk and Line interfaces 
Issue 1 Revision 0 
8-5  

Engineering Information 
Table 8-2 PABX Loss Plan 
Originating Circuit Connecting Circuit Loss (dB) TX Loss (dB) Rx 
Direction Direction 
ONS(D) -6.0 -6.0 
ONS(D) OPSS -6.0 -6.0 
OPSL -3.0 -3.0 
ACO( D) 0 0 
AT-WI -3.0 -3.0 
ATO -6.0 -6.0 
DC0 -3.0 -3.0 
DTO -3.0 -9.0 
D-I-T -3.0 -9.0 
SAlT -3.0 -3.0 
sDll- -3.0 -3.0 
SCl-T -3.0 -9.0 
ONS(D) -6.0 -6.0 
OPSS OPSS -6.0 -6.0 
OPSL -3.0 -3.0 
ACO(D) 0 0 
AT-W) -3.0 -3.0 
ATO( D) -6.0 -6.0 
DC0 -3 -3 
DTO -3 -9 
sA-i-r -3.0 -3.0 
SC-I-T -3.0 -9.0 
sDl-r -3 -3...

Loss and Level Plan 
Table 8-2 PABX Loss Plan (continued) 
Originating Circuit 
Connecting Circuit Loss (ciB) TX Loss (ciB) Rx 
Direction Direction 
ONS(D) 0 0 
ACO(D) OPSS 0 0 
OPSL 0 0 
ACO( D) 0 0 
~J--W~ -2.0 -2.0 
ATO( D) -3.0 -3.0 
DC0 0 0 
DTO 0 -6 
D-l-r 0 -6 
SAT 0 0 
SD-IT 0 0 
S3-r 3 -3 
ONS(D) -0.2 -0.2 
ONS(D) -3.0 -3.0 
AT-W) OPSS -3.0 -3.0 
OPSL -2.0 -2.0 
A-WW 0 0 
DC0 -2 -2 
DTO 3 -3 
D-l-r 3 -3 
sATT 0 0 
ACO(D) -2.0 -2.0 
ATO( D) 0 0 
SD-I-~ 01-2 o/-2 
SCTT 3 -3 
ONS(D) -6.0 -6.0 
ATO(...

Engineering Information 
Table 8-2 PABX Loss Plan (continued) 
Originating Circuit 
Connecting Circuit Loss (dB) TX Loss (dB) Rx 
Direction Direction 
ONS(D) -3.0 -3.0 
s ATT OPSS -3.0 -3.0 
OPSL -2.0 -2.0 
ACO(D) 0 0 
~-WY 0 0 
ATO( D) -3.0 -3.0 
DC0 0 0 
DTO 0 -6 
D-i-r 0 -6 . 
SATT 0 0 
sDl-r 0 0 
SC-l-r 0 -6 
ONS(D) -3 -3 
DC0 OPSS -3 -3 
OPSL 0 0 
ACO(D) 0 0 
AT-W) -2 -2 
ATO( D) -3 -3 
DC0 0 0 
DTO 0 -6 
D-t-r 0 -6 
sAl-r 0 0 
sDTT 0 0 
SCTT 0 -6 
ONS(D) -9 -3 
DTO OPSS -9 -3 
OPSL -6 0 
ACO(D) -6...

Loss and Level Plan 
Table 8-2 PABX Loss Plan (continued) 
Originating Circuit 
Connecting Circuit Loss (dB) TX Loss (dB) Rx 
Direction 
Direction 
ONS(D) -9 -3 
DTT OP.% -9 
-3 
OPSL -6 0 
ACO(D) -6 0 
AT-W) -3 3 
ATO( D) -3 3 
DC0 -6 0 
DTO 0 0 
DTO 0 0 
D-IT 0 0 
sATI- -6 0 
sDTT -6 0 
SCTT 0 0 
ONS(D) -9 -3 
scll- OPSS 
-9 -3 
OPSL -6 0 
ACO( D) -3 3 
AJ-UW -3 3 
ATO( D) -3 3 
DC0 -6 0 
DTO 0 0 
DTO 0 0 
Dll- 0 0 
sA-i-r -6 0 
SD-IT -6 0 
SC-l-r 0 0 
ONS(D) -3 -3 
SD-I-T OPSS 
-3 -3 
OPSL -2 -2...

Engineering Information 
AID CONV. e FIXED 
q VARIABLE - sx-200 
VARIABLE - PABX 
, 
CIRCUIT N CONNECTING 
TIP/RING CIRCUIT 
D/A CONV. 
FIXED - VARIABLE - SWITCHING 
VARIABLE - NETWoRK - 
cc0099 
Figure 8-4 Analog Pad Arrangements - Configuration A 
Conferencing Loss Plan 
8.3 Any system will have at least one 18-port conference circuit (Digital Signal 
Processor). The conferencing circuit, on a frame-by-frame basis, compares the level 
of all conferees and sends the loudest signal to all other parties...