2024年3月21日 · RJ9 is also called RJ10 and RJ22. RJ9 is typically used to connect the telephone headset (sometimes called a handset) to its body. Thus RJ9 does not interface with the public network. For this reason, it is not considered an official registered jack. It has the least number of positions (4 Positions).

NECABLES 2Pack RJ9 Cable 10ft Phone Cord Telephone Cable RJ9 / RJ10 / RJ22 4P4C Male to Male Straight for Both Data and Voice Use Black - 10 Feet

2023年6月7日 · rj11属于6p4c模块化连接器类别，它比rj9/rj10/rj22略大，这些连接器传输音频和控制信号。 他们将电话连接到公共交换电话网络 (PSTN) 网络，还用于非对称数字用户线 (ADSL) 和调制解调器连接。

2024年5月31日 · RJ9, RJ10, RJ11, RJ12, RJ14, RJ45 & RJ48 are all crimp connectors with gold pins used for telecoms, networking and occasionally low voltage lighting control applications. The difference is in the number of positions available on the connector and the number of contacts actually present.

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Poyiccot RJ9 to 3.5mm Adapter, RJ9 Male to Dual 3.5mm Female Headphone Adapter for Telephone Audio Adapter Headset Buddy Cable for Office

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The labels RJ9, RJ10, RJ22 are variously used for 4P4C and 4P2C modular connectors, most typically installed on telephone handsets and their cordage. Telephone handsets do not connect directly to the public network, and therefore have no registered jack designation.

This RJ9 cable is a 4 position flat modular line cord with straight, pin to pin configuration. It is a grey cable with an RJ9 plug on each end.