Call waiting services
This service is available to all subscribers. In this service, the subscriber is able to speak to the second subscriber after hearing the line beep by immediate push of telephone set flash. In this mode, the first subscriber will remain in waiting mode and by pushing the flash, the communication continues with the first subscriber.
It should be mentioned that if the subscriber does not require this service temporarily, he can inactivate the service by dialing #43#. The dialing apparatus must be of TONE type.