Null modem with full handshaking

[fananest]

In this null modem cable, seven wires are present. Only the ring indicator RI and carrier detect CD signal are not linked.

Null modem with full handshaking (following figure - attachment), the lines are purely used for telling the other side if communication is possible.

null-cable-modem-800x481.jpg

Compatibility: Openbox X3, Openbox Q3, Openbox X4, Openbox Q4, Openbox S9, Openbox S10, Skybox, etc...

[Hadron]

Openboxes/Skyboxes don't need full handshaking.

Only 3 wires are needed (rx, tx & gnd).

2 - 3
3 - 2
5 - 5