the same time it will start or re initiate an internal lcsuo2 timer which initiates the monitoring of the incoming calls signalling of the wd and or hs by the lcsuo2 and if an access to the wd and or hs display is available to the lcsuo2 then the lcsuo2 will display a user feedback message such as in example u201c please hold u201d whilst timer is running and u201c retry later u201d if the timer expires if the timer expires the lcsuo2 stops and resets all its routines timer and buffered phone number however if the timer is not expired and an incoming call is received from a pre defined identifier then the lcsuo2 will accept the incoming call and optionally notify the requesting wd and or hs that his call request to his specified 3 rd party number has been established by for example a loudspeaker feedback and or a display feedback if available it will also reset the timer alternatively only if the wd and or hs does not support caller id then in the previous case when the timer has not expired and an incoming call is received then the lcsuo2 will accept the incoming call anyway and reset the timer also optionally if access is available to the wd and or hs call waiting function by the lcsuo2 then the lcsuo2 will activate the call waiting function when it starts its internal lcsuo2 timer the proprietary sub module local call set up option1 lcsuo1 and the proprietary sub module local call set up option2 lcsuo2 are a.