Just noticed my old notes. That relay was used to pulse - dial as well, meaning that the number of transitions is probably 100+ for each CC transaction. It got a LOT of use. --Bob -- Note: To protect our network, attachments must be sent to attach@engineer.cotse.net . 1-520-850-1673 USA/Canada http://beam.to/azengineer -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist