Philips Sopho 2000 IPS - Direct Digital Interface; System Outline

– 270 – NWA-008845-001 Rev.5.0
32ch1005.fm
DIRECT DIGITAL INTERFACE
SYSTEM OUTLINE
The PBX is equipped with Direct Digital Interface which can be interfaced with a Tie Line or Public Net-
work of
• 24-channel PCM Digital Line (1.544 MHz)
• 30-channel PCM Digital Line (2.048 MHz)
To add a Direct Digital Interface to the system, it is necessary to install a DTI (Digital Trunk Interface)
card. Figure below shows the system outline of the Direct Digital Interface of the PBX.
System Outline of Direct Digital Interface
TDSW
24/30 CH 24/30 CHANNEL PCM
DIGITAL LINE
CLOCK SIGNAL
PLO: PHASE LOCKED
OSCILLATOR
DTI : 24/30 CHANNEL
DIGITAL TRUNK
INTERFACE
DTI
MP
(PLO)
MP
(PLO)
DTI
DIGITAL
PBX
JULY/01/2006
DIRECT DIGITAL INTERFACE
SYSTEM OUTLINE