The LAB-XT was an experimenter board designed for telephony projects
using old-fashioned 48V POTS lines. The board has been discontinued,
but these examples hold some clues. LAB-XT Schematic and data
| blinkxt.pbp | PICBASIC PRO program to blink an LED connected to PORTC.1 about once a second. |
| callidxt.pbp | PICBASIC PRO program to display Caller ID information on LCD. Connect either jack on the LAB-XT to a telephone line. Caller ID service must be provided by your local phone company. This code only reads Multiple Data Message Format. LED4 lights when ring is present. |
| grabrxt.pbp | PICBASIC PRO program for simple DTMF digit-grabber that monitors for DTMF on a telephone line and displays any digits received. Tracks display position and wraps to first position on new line. Press RESET to clear display. |
| hserxt.pbp | PICBASIC PRO program to send and receive from the hardware serial port. |
| keyxt.pbp | PICBASIC PRO program to display key label on LCD. |
| phone1xt.pbp | PICBASIC PRO program for simple telephone. Press keys for on-hook, off-hook, and to dial. Incoming call sounds ringer and flashes LED. Watches for loop-current wink when off-hook. |
| phone2xt.pbp | PICBASIC PRO program the same as phone1xt.pbp, but with Caller ID display. |
| pulsext.pbp | PICBASIC PRO sample program for dialing with pulses instead of DTMF. Works as a telephone, but doesnt detect incoming calls. See phone1xt.pbp for ring detect and ringer code. |
| remotext.pbp | PICBASIC PRO sample to demonstrate remote control using DTMF over a phone line. The LAB-XT will answer an incoming call on the third ring and sound a short tone to the caller. The caller can then control 2 leds by pressing keys on his telephone. |
| sitxt.pbp | PICBASIC PRO sample Telemarketing stopper. Reads caller id and plays Special Information Tones (SIT) when CID information has been blocked. |
| voicext.pbp | PICBASIC PRO program to record and play multiple voice messages. Uses hardware SPI for 2-way communication to the voice device. Record messages in sequence by pressing the A key, speaking into a headset mic, then pressing the B key to stop recording. The first message may be played back by pressing 0, the second by pressing 1, etc. |
