one network cable transmits 30 Channels telephone
In some inherent wiring occasions, the existing standard network cable (CAT5 / CAT6, etc.) is used to extend the multi-channel telephone signal (FXO / FXS) for 300 meters.
（1）Traditional PSTN Mandarin voice, each voice occupies a 64K channel, does not compress, and the voice quality is good;
（2）The networking mode is point-to-point, supports FXO and FXS modes, O port and s port, O port is connected with the program-controlled switch, and s port is connected with the user's telephone;
（3）19 inch structure with u height, which can be mounted on standard cabinet.