The IPX Product
The cards in the original IPX system were:
- The PCC - The Processor Control Card - a Motorola 68000 based shelf control card
- The VDP - The Voice Data Processor - Implemented a VAD algorithm and packetized the voice
- The VCD - The Voice Compressor-Decompressor - Implemented ADPCM
- The TXR - The Transmit Receive Card - Implemented a T1 interface with packet queues
- The PIC - The Protection Interface Card - Allowed the T1 interfaces to be swapped
The cards in the second wave were
- The SDP - The Synchronous Data Processor - added V.35, RS-422, and RS-232 data to the IPX (this card was a very early use of Xilinx FPGAs & StrataCom was their largest customer for a time)
- The CDP - The Circuit Data Processor - Added E1 and integrated echo cancellation
The card in the third wave was
- The FRP - The Frame Relay Processor - Added Frame Relay to the IPX (implemented the SAR function in Motorola 56000 DSP's)
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