Mitel SX-200 DIGITAL Pabx Engineering Information Manual

Engineering Information 
9. ELECTRICAL CHARACTERISTICS 
General 
9.01 This Part gives details of the electrical characteristics of the 
power supplies. A summary of the electrical power characteris- 
tics is detailed in Table 9-1. 
TABLE 9-l 
ELECTRICAL POWER CHARACTERISTICS 
Characteristic Details 
Door-Mounted AC 
Power Supplv 
Input voltage 120 Vat -20% to +lO% 
Frequency 44 Hz to 64 Hz 
Holdover Time Momentary interruptions in commercia 
power 
Input Current 
Talk Battery Noise 
Shelf-Mounted AC...

Engineering information 
TABLE 9-3 
REAR DOOR POWER SUPPLY TEST POINT VOLTAGES 
Voltage Range 
+a vdc 
0 Vdc 
-5 Vdc 
-10 Vdc 
-48 Vdc 
GND or 0 Vdc 
90 vat +7.6 to +a.4 
-5.3 to -4.7 
-10.5 to -9.5 
-52.0 to -45.0 
85.0 to 95.0 
Page 9-2/%  

Engineering Information 
10. SIGNALING AND SUPERVISION 
General 
10.01 
10.02 
(a) 
lb) 
(cl 
10.03 This ‘Part outlines the signaling and supervision parameters of 
the SX-200@ DIGITAL PABX. 
The standard range of tones are available from the SX-200@ 
DIGITAL PABX’s Digital Signal Processor: 
12 DTMF sets of tones. Those in common use are listed in 
Table 30-l. 
A set of tones, listed in Table 12-4, which form part of the 
North American Audible Tone Plan. 
One ringing tone of 20 Hz. 
The SX-200’ DIGITAL...

Engineering Information 
TABLE 10-l 
DIAL PULSE RECEPTION LIMITS 
Parameter 
ONS Line: 
Pulse Rate 
Break Duration 
Interdigit Time 
8 Station Line: 
Pulse Rate 
Break Duration 
Interdigit Time 
OPS Line: 
Pulse Rate 
Break Duration 
Interdigit Time Min 
8 pps 
58% 
300 ms 
8 PP~ 
50% 
300 ms 
8 PPS 
42% 
300 ms Max 
12 PPS 
64% 
15 s 
12 PPS 
80% 
15 s 
12 PPS 
84% 
1% s 
TABLE 10-2 
DTMF TONE PARAMETERS 
Frequency deviation : +1.5 % 
Signal interval (2 frequency) : 40 ms (min) 
Per frequency, minimum...

Engineering information 
11. TRANSMISSION 
General 
11.01 The following descriptions d.etail some of the transmission 
characteristics which apply to the SX-200@ DIGITAL PABX. The 
terms used for the different types of peripheral interfaces are ex- 
plained in Table 1 l-l. 
Page 11-l  

. 
Engineering Information 
TABLE 11-1 
INTERFACE REFERENCES 
Circuit Card Type 
Ref Description (Part No.) 
INS An industry-standard telephone set may be connected to 
the SX-200@ DIGITAL PABX by means of one of the 
following card types: 
ONS(D) * ONS Line card 9109-010 
ONS(A) * 8 Station Line card 9110-011 
3PSS An industry-standard telephone set located off premises 
may be connected to the SX-200@ DIGITAL PABX via this 
card type: 
* OPS Line card 9109-020 
3PSL An industry-standard telephone set...

Engineering Information 
Frequency Response 
11.02 The frequency response relative to 1004 Hz at 0 dBm for dif- 
ferent types of interconnections is shown in Table 11-2. 
Overload - Digitally Switched Analog Card Types 
11.03 The overload levels shown in Table 11-3 define the maximum 
signal levels which may be applied to an analog interface be- 
fore clipping occurs. The Input Overload (IOL) defines the maximum 
analog input signal level which can be applied to a digital interface 
circuit before...

Engineering Information 
TABLE 11-2 
FREQUENCY RESPONSE 
Interconnection Frequency (Hz) Variation in Attenuation 
w/r to 1004 Hz (dB) 
minimum maximum 
Line to Line 60 
200 
Line to 2-W Analog Trunk 300 
3000 
2-W Analog Trunk to 2-W 3200 
Analog Trunk 3400 
Line to 4-W Analog Trunk 
2-W Analog Trunk to 
4-W Analog Trunk 60 
200 
300 
3000 
3200 
3400 -20.0 -- 
0 -4.0 
0.4 -0.65 
0.4 -0.65 
0.4 -1.5 
0 -3.0 
4-W Analog Trunk to 
4-W Analog Trunk 60 
200 
300 
3000 
3200 
3400 -16.0 -9 
0 
-3.0 
0.3 -0.3...

Engineering information 
TABLE 11-4 a 
SIGNAL TO DISTORTION RATIO 
1004 Hz input 
Level 
(dBm0) Signal/Distortion Ratio (dB) 
95% of all connections 
33 
27 
22 
Intermodulation Distortion 
Il.05 Intermodulation (harmonic) distortion is measured using two 
pairs of equal level tones (851/863 Hz and 1372/1388 Hz), at a 
total composite input power of -13.0 dBm0. Table 11-5 shows the 
second and third order products for the different types of connections. 
95% of the connections in each category shall...

Engineering Information 
TABLE 11-6 
RETURN LOSS CHARACTERISTICS 
Connection 
Tvw 
Line to Line 
Line to 4-W Trunk 
4-W Trunk to Line 
Line to 2-W Trunk 
2-W Trunk to Line 
4-W Trtink to 2-W 
Trunk 
2-W Trunk to 4-W 
Trunk 
4-W Trunk to 4-W 
Trunk 
ONS(D) Line 
2-W Trunk 
Loop Start LS/GS 
Trunk (2-W) 
Ground Start LS/GS 
Trunk (2-W) 
Line to Line * 
Trunk to Trunk * 
Line to Trunk * Terminal Balance 
ERL SFRL 
ids) (dB) 
18 12 
24 14 
24 Ii 
18 12 
18 12 
28 14 
28 14 
20 14 
24 14 Through Balance 
ERL...