Teltone m-392 Guida Utente
Appendix 1: Specifications
M-392-A/B, M-393-A/B, and M-394-A/B Line Sharing Switches
Power Requirements
20 VDC
≤
DC Input
≤
34 VDC.
Maximum current draw = 500 mA
UL/CSA-recognized supply included with unit.
UL/CSA-recognized supply included with unit.
24 VDC, 120 VAC
±
10 %, 60 Hz, 0.2 A max.
No internal fusing required.
Environmental Requirements
Versions 250-00187-18 or higher
Operating Temperature
Storage Temperature
Storage Temperature
Versions 250-00187-17 or lower
Operating Temperature
Storage Temperature
Storage Temperature
Humidity
-20°C to +60°C
-40
-40
°
C to +70°C (upper limit up to 3 days)
0°C to +50°C
-40
°
C to +60°C (upper limit up to 3 days)
90% maximum non-condensing, relative
Incoming Line Ring Detect
Frequency
Voltage
Ringer Equivalence
Voltage
Ringer Equivalence
Ring trips within 200 mS after end of first ring cycle.
5 to 68 Hz
50 VRMS min
2.0B Max
5 to 68 Hz
50 VRMS min
2.0B Max
Incoming Loop Hold Circuit
DC resistance of approximately 240 ohms.
Local Ring Generator
50 VRMS minimum at 5 ringer equivalence
Ringing frequency
Rounded square wave output at 20 Hz
2.0 S on/4.0 S off
2.0 S on/4.0 S off
±
10%
DTMF Receiver Parameters
Jack A
Receive level
Receive timing
Receive timing
Port 1 - 4
Receive level
-10 to -40 dBm
40 mS min
40 mS min
+10 to -20 dBm
Loop Current On-Hook/Off-Hook Detection
Unit detects off-hook when loop current is
≥
20 mA .
Unit detects on-hook when loop current is
≤
5
mA
.
Forced Disconnect Recognition
<
350 mS
±
50 mS
Port 1 - 4 Rotary Signaling Detection
% Break
Interdigit Time
Interdigit Time
8 - 22 pps
40% to 80%
300 mS min
40% to 80%
300 mS min
Jack A - Rotary Dialing Parameters
Rate
Interdigit time
Interdigit time
10 pps 60% break
740 mS
740 mS
±
5 mS
Local Battery Feed
On-hook voltage
40-52 volts DC.
Off-hook local battery
(short circuit loop current)
30 mA maximum
Call Progress Tone Characteristics
Jack A transmit level
Port 1 - 4 transmit level
Ringback Tone
Busy Tone
Dial Tone
Stuttered Dial Tone
Fast Busy Tone
CNG Tone detection (Fax Port)
Port 1 - 4 transmit level
Ringback Tone
Busy Tone
Dial Tone
Stuttered Dial Tone
Fast Busy Tone
CNG Tone detection (Fax Port)
receive level
Confirmation Tone
-10
±
3 dBm (combined) into 900
Ω
-18
±
3 dBm (combined) into 900
Ω
440 + 480 Hz 2.0 S on/4.0 S off
480 + 620 Hz, 500 mS on/500 mS off
350 + 440 Hz continuous
1 S delay, 3 bursts 100 mS on/off then continuous
970 Hz
480 + 620 Hz, 500 mS on/500 mS off
350 + 440 Hz continuous
1 S delay, 3 bursts 100 mS on/off then continuous
970 Hz
±
10%, 250 mS on/250 mS off
1100 Hz
±
100 Hz
-10 to -45 dBm
2125
2125
±
25 Hz, -13 dBm into 900
Ω
Watchdog Timer/Low Supply Voltage Detector
Provided in unit. If the microcontroller does not toggle the watchdog timer for
150 ms, the microcontroller is reset. When on-card 5 volt supply is
150 ms, the microcontroller is reset. When on-card 5 volt supply is
≤
4.5 volts,
the controller is held reset. Normal phone service is not affected by reset and
exit from reset conditions.
exit from reset conditions.
Indicator Lights
Green power and status indicator.
Dimensions/Weight
1.50" H x 5.50"W x 9.00"D, 1 lb. 8 oz.
Line Sharing Switch
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