Adding a media module
Inserting media modules
56
Upgrade and Service Guide for the Avaya G350 Media Gateway
June 2004
Over-Voltage and Sneak-Current Protection
Out-of-building installations of telephones or other standard (tip/ring) devices or terminals that connect
to the G350 media modules require over-voltage and sneak current protection at both building entry
points. Sneak current protectors must have a maximum of 350 mA and a minimum voltage rating of
600V.
!
WARNING:
The ports on the DCP media modules are intended for in-building use only. Phone lines connected
to these ports are not to be routed out-of-building. Failure to comply with this could cause harm to
personnel and equipment.
The following devices have been evaluated or tested and approved to protect the media modules from
over-voltages and sneak current protection:
•
Avaya MM712 DCP: either 146E IROB (In-Range Out-of-Building) or 4C3S-75 solid state
protectors for surge and sneak current.
•
Avaya MM710 T1/E1: over-voltage and sneak protection for the Avaya MM710 T1/E1 media
module is provided on the Media Module itself.
•
Avaya MM711 Analog: analog trunks use the 507B or 110-SCP-9 sneak current protectors.
Over-voltage protection is normally provided by the local telephone company. Analog voice
terminals use one of the following types of combined over-voltage and sneak current protection:
— Gas tube with heat coil: 4B1E-W
— Solid state with heat coil: 4C1S
— IROB: 146C (4-lines) or 146F (25-lines)
!
WARNING:
Only service-trained personnel should install these circuit protection devices.
