reubenn
Junior Member level 1
pulse dialling
I want to enable pulse dialling in a project that uses a landline telephone and a microcontroller.
1>Should i use a dedicated IC ? Or will a relay switch do ?
2>If i use pulse dialling technique, which relay should i use? A reed relay?
3>How many lines are actually there in a telephone line connection?
How should the relay be connected so that it can be controlled by the micocontroller ?
I want to enable pulse dialling in a project that uses a landline telephone and a microcontroller.
1>Should i use a dedicated IC ? Or will a relay switch do ?
2>If i use pulse dialling technique, which relay should i use? A reed relay?
3>How many lines are actually there in a telephone line connection?
How should the relay be connected so that it can be controlled by the micocontroller ?