GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
SECTION 2. GENERAL DESCRIPTION
2.1 INTRODUCTION
The GDK-20W Digital Wireless Key Telephone System is a fully digital hybrid Key Telephone System, designed to meet the telecommunication needs of small sized business offices & home base.
The GDK-20W System incorporates state-of-the-art digital technology for command processing and voice switching, utilizing a Pulse Code Modulation/Time Division Multiplexing (PCM/TDM) distributed switching matrix. The system supports both "A" and "Mu" law voice encoding rule based on the requirements of local regulations and the ADPCM voice coding to support DECT(Digital Enhanced Cordless Telecommunications) services.
The GDK-20W KSU(Key Service Unit) is wall mounted cabinet that house the MBU(Main Board Unit) and contain card slots for the CO line boards, extension boards and other useful PCBs. There are 6 slots in the system, the 1st fixed slot(slot1) is used to install only the DVIB/DVIBE(Digitized voice interface board) card, the 2nd,3rd fixed slots(slot2, slot3) are used to install one of the LCOB/LCOB2/LCOBE/LCOBA/LCOB4 or STIB/STIB2, the 4th fixed slot(slot 4) is used to install only the PMU(Program Module Unit) card and the 5th fixed slot(slot 5) is used to install the WTIB(Wireless terminal interface board) card. And the 6th fixed slot(slot6) is used to install only the MFB(Multi function board) card.
The GDK-20W System achieves a high level of flexibility by providing support for different types of instrumentation.
The system architecture has been designed to allow a high level of software control over the system's hardware. The software incorporates a vast array of features and capabilities including PC Database Administration, ISDN feature, Remote software downloading, etc.
The GDK-20W System supports a combination of Digital Keysets(LKD, KD, KD/E, KD/S, KD/C series), DECT terminals(GDC-335H,GDC-340H), and various kinds of ISDN terminals as well as analogue single line devices. With the keysets, commonly used features are activated by direct button selection. Additionally, many functions may be accessed by dialing specific codes or optionally, by assigning these dial codes to Flexible Buttons on the keyset. In addition to key telephones, an array of optional terminals is available including Intercom/Door Box
With the flexibility of the GDK-20W extensive feature content and the capability to use an array of instruments, the GDK- 20W can be tailored to meet the short and long term needs of the most demanding customer requirements.
*Note : The CO board(LCOB/LCOB2/LCOBE/LCOBA/LCOB4/STIB/STIB2), DVIB/DVIBE and MFB are used in common with GDK-16 Digital Key Telephone System.
