| 摘要 |
<p>The credit card authorization device (42) includes a modem (44) and auto-dialing mechanism (46) which is connected by a station line (48) to an originating central office switch (10) is connected via Feature Group B or D trunks (60) to a designated destination central office (12) including a stored program control (SPC) switch. The destination central office (12) connected to other central offices (14) by non-Feature Group trunks (24). The Feature Group trunks are connected by the switch in the destination central office to a designated line (52) which is connected to a line side modem (50) which is connected via the public data network (56) to a host computer (58) for effecting the credit card authorization. The SPC switch converts the Feature Group number to a line side number for the line side modem (50).</p> |
