DSTS2 with DSP OPERATING INSTRUCTIONS
FEATURES AND SPECIFICATIONS Tone Dialling: level -5 to -11dBm, 100msecs min duration <1.5% freq. error. Pulse dialling, 10 pps, 63% break +/- 5% Last Number Redial with >5 minutes off-line memory Timed-Break-Recall - 100ms. Loop-start or Ground-start lines, Ground-start button. Ground pick-up via third wire in line cord. Sounder, warble tone. (on-hook, Monitor) Polarity test , < 10mA Red and Green LED's Long line operation: >2kOhms or <10mA, minimum line voltage < 6.
MONITOR MODE Monitor The high impedance monitor allows observation of the line for service quality or availability. There will be no perceptible click or reduction of level to callers when it is connected. Monitor is safe on digital and data circuits but be careful with digital signals - they may not be audible. Sounder The sounder will warble in Monitor mode when there is an incoming call and it will chirp if connected across a line with live Pulse dialling.
TALK MODE Dialling Select dialling mode via the TONE/PULSE switch. Connect to line and monitor to ensure the line is free, then switch to TALK. Check for dial-tone. It is possible to switch from PULSE to TONE at any time (but not from Tone to Pulse). Redial Switch TALK to MONITOR to TALK, then press LNR. Digits are redialled in the dialling mode they were entered previously. After disconnection from the line, the LNR memory is kept for >5 minutes. Timed-Break-Recall For register recall.
DSP ALARM & OVERVOLTAGE PROTECTION DSP (Digital Services Protection) fully protects the phone against the high voltages associated with many digital services. In addition the phone is protected against connection to mains AC power circuits. If an attempt is made to go off hook (TALK mode) on a circuit with a potential of more than 115V ± 5Vdc the DSP alarm will sound (a continuous buzzing tone is emitted). The line is not looped and the internal circuitry is protected.
Distributor Tempo Europe Ltd. Unit 3, Maesglas Industrial Estate, Newport NP20 2NN United Kingdom. Tel: +44 (0) 1633 223552 Fax: +44 (0) 1633 223948 e-mail: contact@cve.co.uk Web: www.tempo.textron.
