NEC SV8500, Manual

Page: 548 / 3438

VOL.2-295
MCMG [SCA-4LC2COTA/MG-4LC2COTA]
7. MCMG [SCA-4LC2COTA/MG-4LC2COTA]
7.1 General
7.1.1 What is MCMG?
MCMG has two functions, Media Converter and Media Gateway. Media Converter (MC) is an interface pro-
viding media conversion between internet protocol (LAN-side) and conventional voice data (the MC-connected
conventional terminal-side). Media Gateway (MG) is an interface between IP network and Analog PSTN line.
MC side <Analog Terminal Interface>
MC has four analog ports. Analog terminal and fax can be connected to the analog ports. Service conditions
are the same as Analog 2MC.
MG side <Analog PSTN Interface>
MG has two analog ports and connects IP Network and PSTN. Any IP terminal can originate and receive
call to/from analog PSTN line.
MC and MG usually work independently. In the case of some failure of MCMG, Power Failure Transfer (PFT)
connects C.O. lines and analog terminals directly and provides emergency line.
Note
Note:
For the PFT service on the UG50, a station line connected to the PFT port cannot be used as a station line
for the system. Be sure to connect a terminal that can be used as telephone to the PFT port. Terminals such
as a FAX terminal are not allowed.
There are following two shapes for MCMG such as Card Type and Box Type.
Outerview of MCMG
Note:
MCMG Card is mounted on 1U-MPC (Multi Purpose Chassis) module. One unit of 1U-MPC module can
accommodate a maximum of two cards. MCMG Card is mounted in the left slot in this figure.
MCMG Box [MG-
4LC2COTA
]
MG1 MC1 MC3
MG
MC
MG0 MC0 MC2
ALM PWR
Ether
OPERATION
MG0 MC1 MC0 MC2 MC3 MG1
ON
LINE 100M LINK
CONSOLE
PFTRD
RESET
MUSIC
MCMG Card [SCA-4LC2COTA]
MG1 MC1 MC3
MG
MC
MG0 MC0 MC2
ALM PWR
Ether
OPERATION
MG0 MC1 MC0 MC2 MC3 MG1
ON
LINE 100M LINK CONSOLE
PFTRD
RESET
MUSIC