Specifications

82 Hardware Description and Reference for Avaya Communication Manager
Media gateways
The equipment room floor must meet the commercial floor loading code of at least 50 pounds
per square foot (242 kilograms per square meter). Floor plans usually allocate space around the
front, the ends, and, if necessary, the rear for maintenance access of the Media Gateways.
Additional floor support might be required if the floor load is greater than 50 pounds per square
foot (242 kilograms per square meter).
The following table shows the weight and floor loading of the media gateways.
Related hardware
Ethernet switch
An Ethernet switch provides connectivity between the servers and the IPSI circuit packs that
reside in some PNs. For duplex reliability, one Ethernet switch is provided. For high and critical
reliability, the Ethernet switches are duplicated. An S8700-series media server supports two
Ethernet connections to the Ethernet switch in the control network.
An S8700-series media server usually uses an Avaya Ethernet switch as part of the control
complex. The Avaya Ethernet switch extends Ethernet connectivity to the PN where the switch
connects to an IPSI. One Ethernet switch is required for duplex reliability. Two are required for
high or critical reliability of voice bearer over CSS or ATM only. If desired, customer-provided
non-Avaya Ethernet switches can be substituted for Avaya Ethernet switches.
The control network for an S8700-series media server does not have to be a dedicated one.
However, an installation that uses a dedicated set of Ethernet switches provides simplicity and
greater reliability.
UPS or power backup
Power backup for an S8700-series media server is highly desirable. Power backup avoids
power problems and ensures that the system processes shutdown gracefully if the power fails.
The Avaya 1000-VA UPS provides approximately 30 minutes of power backup. Combinations of
battery extension modules and a 1500-VA UPS provide up to eight hours of power backup. See
Avaya UPS Unit
s on page 365.
Media gateway Weight (pounds) Floor loading (pounds per square foot)
SCC1 125 (56 kg) 31 (148.9 kg/m
2
)
MCC1 200 to 800 (90 to 363 kg) 130 (624.2 kg/m
2
)
G700 16.5 (7.5 kg) Floor loading depends on load on the rack