Mbuid (Main Board Unit) - iPECS eMG80 Installation Manual

iPECS eMG80
Hardware Description and Installation Manual

4.5.4 MBUID (Main Board Unit)

Description
The MBUID, which is shown in
peripheral interfaces, supervises all resources in the system, controls the gain adjustment
of the PCM signal, generates the System tones, and manages System call processing. The
MBUID 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 MBUID has eight (8) DKT and four (4) SLT station interface ports and two (2) VoIP
channels. The SLT interfaces support 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 with the first board mounted on the CN1 connector of the
MBU and the second mounted on the pass-through connector on the first board. Interface
boards available for the MBUID 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 (4 channel) & 4 Hybrid ports

BH208 - BRI & Hybrid board, 2 BRI (4 channel) & 8 Hybrid ports

WTIB4 - Wireless Terminal Interface board, 4 Base Station ports

In addition to the CN1 connector, a PRIU or BRIU2 may be installed on the CN2 connector.
Figure 4.5.4-1, controls communication between the
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