Ksu Main Board Unit (Mbu); Mbua (Main Board Unit) - iPECS eMG80 Installation Manual

iPECS eMG80
Hardware Description and Installation Manual

4.5 KSU Main Board Unit (MBU)

One of four (4) MBUs (MBUA, MBUAD, MBUI or MBUID) is factory install in the KSU. The
specifics of each MBU are discussed in sections 4.5.1 to 4.5.4.

4.5.1 MBUA (Main Board Unit)

Description
The MBUA, which is shown in
peripheral interfaces, supervises all resources in the system, controls the gain adjustment
of the PCM signals, generates the System tones, and manages System call processing.
The MBUA contains switches for database protection and initialization. A built-in LAN port
provides access to the eMG80 Web Admin and basic VoIP channels. In addition, a USB
port is provided to allow backup and restore of the system database.
The MBUA has 4 (four) analog CO Lines, and one DKT and seven (7) Hybrid station
interfaces and two (2) VoIP channels. The CO line ports support loop start CO lines with
detection of supervisory signals including Caller Identification (CID), Polarity Reversal (PR),
and Call Progress Tone (CPT).
The SLT line interface of the Hybrid ports supports FSK (ITU-T V.23 or Bell 202) or DTMF
(ITU-T Q.23) Caller ID and the Message Wait Indication (MWI), DTMF detection, sinusoidal
ringing generator, -48V DC feeding voltage, current limiting and GR-909 Line Testing
function.
A VoIP channel is required to support each SIP Trunk line, LIP or SIP Phone, and remote
user. The two (2) basic VoIP channels on the MBU can be increased to eight (8) with an
unlock code.
As shown in the figure, the MBU has connectors for the various option boards including
connector CN1 which is used to connect optional Interface boards. A maximum of two (2)
Interface boards can be installed; the first is mounted directly on the CN1 connector of the
MUBA and the second is mounted on the pass-through connector of the first Interface
board. Interface boards available for the MBUA include:
CH204 - CO Line & Hybrid board, 2 CO & 4 Hybrid ports

CH408 - CO Line & Hybrid board, 4 CO & 8 Hybrid ports

HYB8 - Hybrid board, 8 Hybrid ports

CS416 - CO Line & SLT Board, 4 CO & 16 SLT ports

SLB16 - SLT board, 16 SLT ports

BH104 - BRI & Hybrid board, 2 BRI (2B+D channels) & 4 Hybrid ports

BH208 - BRI & Hybrid board, 2 BRI (2B+D channels) & 8 Hybrid ports

WTIB4 - Wireless Terminal Interface board, 4 Base Station ports

Figure 4.5.1-1, controls communication between the
25
Issue 1.0