Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Engineering Information 
TABLE 11-7 
ENVELOPE DELAY DISTORTION 
Connection 
Type 
Line to Line 
Line to Trunk 
Trunk to Trunk 
Longitudinal Balance Frequency Band 
(Hz) 
1000 - 3000 
400 - 3200 
1000 - 3000 
400 - 3200 
1000 - 3000 
400 - 3200 Envelope Delay 
Distortion 
(microseconds) 
less than 280 
less than 560 
less than 140 
less than 280 
less than 140 
less than 280 
11.11 All connections meet the longitudinal balance requirements 
outlined in Table 11-8. Note that these apply to OFF-HOOK...

Engineering Information 
Idle Channel Noise - C Message 
11.13 The idle channel C message noise will not exceed the following 
values for any type of interconnection: 
e 
Average: 16 dBrnC 
9 
95% of all interconnections: 20 dBrnC 
Idle Channel Noise - 3 kHr Flat 
11.14 The idle channel noise for 3 kHz flat noise requirements do not 
exceed the following values for any type of interconnection: 
0 95% of all interconnections: 39 dBrn0 
0 
50% of all interconnections: 35 dBrn0 
Page 11-3/B  

Engineering Information 
12. LOSS AND LEVEL PLAN 
General 
12.01 This Part describes the loss and level plan for North American 
applications of the SX-ZOO@ DIGITAL PABX. 
12.02 A large number of interconnections are possible with the SX- 
ZOO-* DIGITAL PABX, ranging from interconnections between 
on-premises (ONS) line circuits, to the interconnection of remotely 
located satellite PBXs with the SX-ZOO@ DIGITAL PABX. The principles 
of the loss and level plans are described in Part A, their application...

Engineering i,nformation 
LOCAL TOLL (OR HIGHER) TOLL (OR HIGHER) LOCAL 
+- VNL 9 2.5dB += VNL 
-I.+ VNL + 2SdB -pl 
TOLL- 
CONNECTING 
TRUNK INTER TOLL 
TRUNKS TOLL- 
CONNECTING 
TRUNK 
(2W ANALOG) (4W ANALOG) (2W ANALOG) 
12.07 Control of echo and noise with this plan is achieved by insert- 
ing fixed amounts of loss at the end points where the conver-  Figure 12-1 Local to Local Central. Offices VNL Objectives _ 
sion to analog takes place. A compromise value of 6 dB was selected 
for line-to-line...

Engineering Information 
LOCAL LOCAL 
co co 
PAD 
X 255 PCM 
XI > 
1 LINE TCT INTERTOLL 
TRUNK : TCT LINE 
255 PCM 
x 
PAD 
6dB 
END-END LOSS p-1 
X3467Rl 
Figure 12-2 Local to Local Central Offices Fixed Loss Plan Objectives 
Satellite PBX 
12.10 A satellite PBX (shown in Figure 12-3) is defined as a PBX 
which has no direct connection to the serving central office for 
incomming traffic. It has no directory number, and receives all incom- 
ing calls through the main PBX over satellite trunks. The...

Engineering information 
Analog Transmission Pad Arrangements - Analog ivterfaces 
12.13 The transmit pads for the analog type cards consist of a vari- 
able or fixed portion on the card itself, a fixed portion on the 
Digital Interface card, and a variable portion in the coder/filter. The 
variable transmit pad on the analog ONS line card may be set to either 
-8.0 dB or -iO.7 dB. The fixed transmit pad on the analog trunk cards is 
set to -8.0 dB. The fixed portion on the Digital Interface card is set...

Engineering Information 
. 
TOLL 
OFFICE 
/ AT0 
ONS 
OPS 
SS‘l 
ATN 
sx-208  sx-208 MAIN  MAIN 
PABX  PABX 
NOTE: SEE TABLE 12-l FOR CIRCUIT 
REFERENCE DETAILS 
ANALOG 
0 
CD 
XAOD4BRlE 
Figure 12-3 Types of Trunk and Line Interfaces 
Page 12-5  

Engineering information 
TABLE 12-1 
SX-200s DIGITAL PABX LOSS PLAN 
Page 12-6  

Engineering Information 
TABLE 12-1 (CONT’D) 
$5X-200@) DIGITAL PABX LOSS PLAN 
Originating 
Circuit 
ACO( D) 
ACO(A) Connecting Loss (dB) Loss (dB) 
Circuit TX Direction Rx Direction 
ONS(D) 0 0 
ONS(A) -0.2 -0.2 
OPSS 0 0 
OPSL 0 0 
ACO(D) ,O 0 
ACO(A) -0.2 -0.2 
A-T-W) -2.2 -2.2 
AJ-W) -2.0 -2.0 
ATO -3.2 -3.2 
ATO( D) -3.0 -3.0 
sATT 0 0 
ONS(D) -0.2 -0.2 
ONS(A) -0.4 -0.4 
OPSS -0.2 -0.2 
OPSL -0.2 -0.2 
ACO(D) -0.2 -0.2 
ACO(A) . -0.4 -0.4 
A-WV -2.4 -2.4 
AJ-W) -2.2 -2.2 
ATO -3.4 -3.4 
ATO -3.2...

Engineering information 
TABLE 12-l (CONT’D) 
SX-200@ DIGITAL PABX LOSS PLAN 
TX Direction Rx Direction 
Page 112-B