Call waiting tells you if someone's trying to call you while you're already on a call.
It just gives a soft dual bleep to let you know.
- To activate - enter *43# followed by SEND
- To accept the incoming call and end the original call - press 1 then SEND
- To hold the original call and accept the incoming call - press 2 then SEND
- To swap between calls - press 2 then SEND
- To end present call and return to holding call - press 1 then SEND
- To cancel - enter #43# then SEND