Conventional Systems Technical Manual - Alcad

INTERNAL COMMUNICATION INSTALLATIONSSTANDARD INSTALLATION WITH INTERNAL COMMUNICATIONNothing works.Check the mains voltage in the control equipment for internalcommunication. If the working LED indicator of the control equipmentis blinking continuously, make sure that there is not a shortcircuitin connections I1,I2 of the control equipment to the telephones.Check connections I1,I2 from the control equipment tothe telephones. If the fault cannot be found, there may be somethingwrong with the control equipment.Internal calls cannot be made from a telephone.Check whether the internal communication BUS is busy (beepingtones are heard when an internal call is made to any telephone).Check the connection of the CC1 connector in the telephone.Check connections I1,I2 of the telephone to the controlunit. Check that there isn´t two telephones with the same extensionnumber. If the fault cannot be found, there may be somethingwrong with the telephone.Internal calls cannot be made to a telephone.Make sure that the receiver of the telephone with which youwish to communicate is off the hook (beeping tones are heardwhen an internal call is made to the phone in question). Checkconnections I1,I2 from the telephone to the control equipment. Ifthe fault cannot be found, there may be something wrong withthe telephone.There is no sound in any telephone.Check connections I1,I2,I3 between the telephones for internalcommunication.There is no sound in one telephone.Check connection I3 of the telephone to the other telephonesin the installation. If the fault cannot be found, there may besomething wrong with the telephone.While communication is in course with anothertelephone, a call from the entrance panel cannot beheard (in installations with 4+N electronic doorentry system).Check that when the receiver has been correctly replaced thecall from the entrance panel can be heard. If it cannot, consultthe datasheet of the relevant audio unit. If the fault cannot befound, there may be something wrong with the telephone.STANDARD ELECTRONIC DOOR ENTRY INSTALLATION WITH INTERNALCOMMUNICATION BETWEEN TELEPHONESIf any problem arises related to the functioning of the electronicdoor entry installation, see the section entitled “StandardInstallation in a Building” on page 289, under the general heading“Electronic Door Entry Installations. Electronic Call”.If any problem arises related to the functioning of the internalcommunication installation, see the section entitled “Internalcommunication Installations”.ELECTRONIC DOOR ENTRY INSTALLATION IN BUILDING WITH SEVERAL POINTSOF ENTRY WITH INTERNAL COMMUNICATION BETWEEN THE TELEPHONESIf any type of problem arises related to the functioning of theelectronic door entry installation, see the section entitled“Installation in Building with Several Points of Entry” onpage 290, under the general heading “Electronic Door EntryInstallations. Electronic Call”.If any type of problem arises related to the functioning of theintercommunication installation, see the section “Installation inHousing estates with Several Buildings”.298