Manuals / BT / Communications / Telephone

BT BT Versatility manual System ISDN settings, T0 interface termination, S0 interface termination

Models: BT Versatility

1 59

Download 59 pages 3.62 Kb

Page 20

BT Versatility

Installation and Maintenance Manual

System ISDN settings

The system can be configured with 8 Basic Rate ISDN interfaces. Half of these can be configured for internal S-bus operation.

The second interface on the CCU and each of the Ports Modules can be programmed as S-bus interfaces for ISDN to-the-desk.

T0 interface termination

An ISDN bus must be terminated twice, once at the start and once at the end of the bus. The Network Terminating Equipment (NTE) will provide the termination at the start of the bus. The end termination is also provided by the NTE if the BT Versatility is directly connected to one of the NTE RJ45 sockets.

If ISDN 2 extension cabling and sockets are provided between the NTE and the switch the end terminating resistor will normally be provided by an ISDN type 2 RJ45 line jack.

In both of these cases BT Versatility T0 interface does not require the terminating resistor to be connected and the associated switches in the MDF associated with the T0 interface must be set to OFF (Default).

NOTE: In the case of structured cabling if no end termination is provided, the associated switches in the MDF associated with the T0 interface must be set to ON.

S0 interface termination

An ISDN S-bus must be terminated twice, once at the start and once at the end of the bus. The BT Versatility S0 interface emulates the Network Terminating Equipment (NTE) and consequently is always terminated with 100 ohm resistance. In this case the switches associated with the interface in the MDF must be set ON.

19

Image 20

BT BT Versatility manual System ISDN settings, T0 interface termination, S0 interface termination

Contents

Communications without the complications Installation and Maintenance ManualBT Versatility Contents BT VersatilityIntroduction General overviewLightning and surge voltage protection Safety Precautions during installation and system upgradesElectrostatic precaution ESP BT Versatility Pro. PlusIncludes System, VM, 1M,2V8 BT Versatility Voice Digital Includes SystemBT Versatility Voice Analogue Inculdes System Versatility Value Add PacksMaintenance items BT VersatilityInstallation checklist THIRD, install the Network and Expansion modules as requiredMounting the CCU Installing the Central Control UnitCCU LocationCCU CCU Mounting bracket clearances 300mmMounting the CCU 300mm minModules located in the CCU Module locationMounting the CCU with two brackets Installing the Backplane wall bracketSystem Expansion Mounting the Backplane Securing the backplane to the wall bracketExpansion Modules Push up to lock Installing an Expansion moduleBT Versatility Installing the Analogue Module in the CCU Analogue line moduleFirst network module To Locate the Analogue Module in the Ports ModuleBT Versatility Installing the Basic Rate ISDN Module in the CCU Basic Rate ISDN expansion moduleBT Versatility Digital Line Module ISDN First network moduleTo Locate the Digital Line Module ISDN 2 in the PORTS module First network moduleS0 interface termination System ISDN settingsT0 interface termination BT Versatility Voicemail moduleBack up Voice Module voice messages and Greetings Primary Rate Interface Availability TBC BT VersatilityConnecting the battery backup unit to the system Connecting the Battery Ensure the battery switch on the BBU unit is turned offLed Indicators BT VersatilityFeaturephone V16 Featurephone connections underside of phoneV8 Featurephone connections underside of phone FeaturephoneWall mount Plinth position Plinth position Plinth position Attaching the Featurephone desk plinth V8 andPosition at 20 degrees Feature phone with console V16 expansion consoleTo connect the V16 Console to a Featurephone V16 only BT VersatilityCord Rail Clip, Plinth and installation of the V16 expansion console15 cm cord RJ11 connector Wall-mounting a Featurephone Line cord railsDoor intercom bracket Mounting screw Door IntercomWall hook when the V8/V16 is in a 20 degrees or 35 degrees position Connecting the extensions Cabling the unitD Data - LJU Pin Standard 4-Wire IDC Krone connectorA Speech - LJU Pin B Speech - LJU Pin C Data - LJU Pin Connecting a MOH Music On Hold Module CCU connectionsDoorstrike Door IntercomConnecting a PA public Address amplifier Connecting a PC or Printer to the Serial PortPorts Module MDF Connections BT VersatilityInternet Module MDF Connections BT VersatilityExternal Extension Options Module MDF ConnectionsCentral Bell Expanding an Existing system Installing an additional Network Analogue or ISDN moduleInstalling additional modules Maintenance procedures Hot Swapping faulty modulesReplacing a faulty Module MDF BT VersatilityReplacing Faulty PCBs Replacing the 008 extension boardReplacing the CCU Control PCB Power supply unit spare fuse BT VersatilitySpare Fuse Replacing the Power Supply UnitBT Versatility Replacing the CCU MDF ISDN Power failAnalogue Commissioning Power up and testSwitch on Programming BT VersatilityEquipped exchange lines Incoming ringingBT Versatility Call BarringInstallation Wizard Internet Module ProgrammingADSL ISDN BT VersatilityRecommendations for customer training Troubleshooting Technical specification 230 ± 10% V 50 Hz2 see above for system max 2 see above for system maxBT Versatility EN55022, EN55024, EN60950Charcoal ref Pantone 432CFull remote support from a BT Maintenance Centre Optional softwareINDEX Offices Worldwide PHME 42396/11/04