MicroNet Technology SP5054, SP5050, SP5052 user manual Pin Name Dir Description, Gnd

PIN 1, 2: Transmit

PIN 3, 6: Receive

COM: RS232 console port (9-pin Male connector, as the same as the computer).

Male connector (as the same as the PC)

9 PIN D-SUB MALE at the VoIP FXO gateway

Pin	Name	Dir	Description
2	RXD	Å	Receive Data
3	TXD	Æ	Transmit Data
5	GND	─	System Ground

L1 ~ L6: RJ-11 (PSTN or Extension Line of PBX)

On / Off: Power switch on/off.

100 - 240 VAC: AC Power supply.

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