User manual

21/1551-ASP 113 01 Uen N2 2014-01-28 61

OLUTION ARCHITECTURE

ELU34 uses two signaling methods to send out this type of information,

either DTMF tones or Frequency Shift Keying (FSK).

5.1.10.4 Analog Trunk Units

Analog trunk units are provided with the TLU80 and TLU83 boards. The

TLU80 board provides analog E&M and inband tone signaling. The

TLU83 board provides analog loop and ground start signaling.

Note! The TLU 80 can only be used in MX-ONE Classic, not in MX-ONE

Lite due to backplane function.

5.1.10.5 Digital Interfaces

The ELU33 provides 32 lines for digital extensions. It occupies 32

timeslots of the switch. The ELU33 can also handle enhanced signaling

on the extension line. Firmware download to both the board and to termi-

nals connected to the extension lines is supported.

5.1.10.6 Digital Trunk Units

The digital trunk units are mainly intended for connection with PSTN and

PLMN networks but can also be used for private networking. The digital

trunks can be used for ISDN/QSIG, DPNSS, and CAS signaling. The

TLU76 board provides a single E1 (30B+D) interface, that can be used

for ISDN/QSIG, DPNSS, and CAS signaling. The TLU77 board provides

a single T1 (23B+D) interface, that can be used for ISDN, DPNSS, and

CAS signaling. The TLU79 board provides four ISDN-T Basic rate inter-

faces (2B+D). Media gateways with the board have 8 built-in E1/T1

ISDN PRIs.

5.1.10.7 Integrated DECT Interfaces

The ELU31/4 board provides interfaces for up to 8 DECT base stations.

It occupies 32 timeslots of the switch. Firmware download to both the

board and the base stations connected to the board is supported. The

integrated DECT solution requires high quality synchronization originally

provided via ISDN trunks or E1/T1 interfaces. From introduction of the

MGU/2 board this board has capacity to act as synchronization source

and thus replace the need for ISDN links to remote sites. Synchroniza-

tion (within a synchronization area) is distributed throughout the DECT

synchronization area via a RS422 cable between the magazines. Base

stations connected to ELU31 boards that are properly synchronized,

builds up the air-synchronization area where the cordless DECT phones

can freely roam around and make hand overs.