| Electrical |
| Loop Limit |
2 kΩ maximum at 48 VDC (nominal 20 mA minimum loop current) |
| DC Resistance(Talk Mode) |
300 Ω typical |
| Monitor Impedance |
| TS22 |
5 kΩ nominal at 1 kHz |
| TS22A |
120 kΩ nominal at 1 kHz |
| Rotary Dial Output |
| Pulsing Rate |
10 pps ±5 pps |
| Percent Break |
61 % ± 2 % |
| Interdigit Interval |
1000 ms typical |
| Leakage During Break |
>50 kΩ |
| DTMF Output |
| Tone |
±1% maximum |
| Frequency Error Tone Level |
-3 dBm combined (typical) |
| High versus Low Tone Difference |
4 dB maximum |
| Monitor Amplifier |
9 V battery; provides 25 hours |
| Power Source |
continuous use, typical |
| Speaker Levels for TS22 |
Low, medium, high and off |
| Automatic Power Shut Off |
After 5 min. of no audio signal |
| Speakerphone Levels TS22A |
Low, medium, high and off |
| Power Source |
Shared line and battery power |
| Physical |
| Physical Measurement |
10.25 in x 2.69 in x 3.38 in (26 cm x 6.83 cm x 8.57 cm) |
| Weight |
| TS22 |
21 ounces (.595 kg) |
| TS22A |
22 ounces (.624 kg) typical |
| Environmental |
| Temperature |
| Operating |
29 °F to 140 °F (-34 °C to 60 °C) |
| Storage |
-40 °F to 150 °F (-40°C to 66 °C) |
| Altitude |
To 10,000 feet (3,000 meters) |
| Relative Humidity |
5 % to 95 % |
| Certifications and Compliance |
ConformiteEuropeenne. Conforms to relevant European Union directives. |