NEC SV8500, Руководство пользователя

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VOL.3-365
CHAPTER 3 NETWORK INTERFACE
3. Digital TIE Line
3.1 General
Here explains how to connect Digital TIE Line. For this connection a Digital Trunk Interface (DTI) Circuit Card
is required. If the Telephony Server is used as a clock-subordinate node, clock signal must be extracted from the
Digital Trunk Interface.
Note:
Time Division Switch (TSW) circuit card is equipped with a Phase Lock Oscillator (PLO). Therefore, a
dedicated PLO circuit card is not required to use digital interfaces.
Digital TIE Line Configuration
3.2 Installation Procedure
Follow the procedure below to install a DTI card.
STEP 1: Install a DTI circuit card into a proper slot of PIR for connecting digital TIE Line. For more informa-
tion about DTI circuit card, refer to the Circuit Card Manual.
STEP 2: Check the terminal locations on the MDF. To identify the lead names and the lead’s terminal locations,
refer to LT Connector Lead Accommodation of the circuit card in the Circuit Card Manual.
STEP 3: Provide the necessary cross connection on the MDF referring to the following figure.
Perform the cross connections for digital interfaces as shown in the following:
WARNING:
Back the circuit card out of the module before attempting the cross connection. Otherwise, the fuse
mounted on the Digital Trunk Interface (DTI) circuit card will blow and the circuit card will
become inoperative
Analog
Telephone
DTI
PLO
OSC : Digital Trunk Interface
: Phase Lock Oscillator
: Oscillator
Analog
Telephone
DTI LC
CLK
Digital Line
Telephony Server
(Clock Subordinate Node)
Telephony Server
(Clock Source Node)
TIE Line
Network
DTI LC
PLO OSC