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Welcome,
CTPX Telecommunications, Inc., (formerly known as VoicePRO Systems, INC.), pioneered and perfected the concept of PC Based Telephony Interface Conversion Cards. Our DID and E&M analog interfaces reside in any available ISA bus slot drawing only power for operation. There is no interplay between our cards and your computer so software drivers etc... are not needed which eliminates conflicts. There is no need for the additional clutter of “power packs” special cables or special chassises. Our cards are fast, quiet and flexible. Get all the facts, prices, and information before you buy.
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