Version 6.6
245
October 2014
Installation & Operation Manual
28. Working with the Media Gateway Boards (TP-6310 and TP-8410)
28
Working with the Media Gateway
Boards (TP-6310 and TP-8410)
The Media Gateway boards (TP-6310 and TP-8410) provide “voice over packet” (VoP)
functionality and process both signaling (call control) and media streams. Each Media
Gateway board operates as a standalone Media Gateway. It has its own set of IP
addresses and directly communicates with external VoP entities – e.g. Soft Switches,
other Media Gateway or SIP agents.
28.1
Redundancy Model Overview
Media Gateway boards are grouped into Redundancy Groups. Each Redundancy
group operates in an asymmetric N+1 redundant mode. One of the Media Gateway
boards in the Redundancy Group is configured as a Redundant Board and is
accompanied by a designated redundant RTM module (behind it).
When a failure occurs on any Media Gateway board, the Redundant board takes over
the activity of the failed one and all channels (both signaling and media) are re-routed
to it via the chassis mid-plane and redundant RTM. Depending on the configuration,
this activity switchover may or may not affect established calls.
To restore High Availability, you must attend to the failed Media Gateway board as
soon as possible. As soon as the problem is fixed (e.g. by replacing the failed board
with a functional Media Gateway board, as described in 'Replacing the Failed Media
Gateway Board' on page
), you perform an activity switchback, in which the
functional Media Gateway board is returned to service and resumes handling the
traffic as usual. As soon as the switchover takes place, the Redundant Media
Gateway board is released and the Media Gateway boards' redundancy service is
restored.
Note:
There is an unmarked pinhole on the front panel of the Media Gateway
board. This pinhole should never be used when the Media Gateway board is
inserted into the Mediant 8000 chassis. In particular, this pinhole should never be
used to simulate the Media Gateway board failure/switchover (since switchover
may not be properly performed upon such hardware misuse). The correct methods
to simulate Media Gateway board switchover are as follows:
•
Perform switchover via EMS GUI or CLI
•
Extract Media Gateway board from the chassis
Summary of Contents for Mediant 8000
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Page 33: ...Part I Hardware Overview This part describes the hardware overview of the Mediant 8000 chassis...
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Page 775: ...Part VI Maintenance This part describes the Mediant 8000 maintenance procedures...
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Page 879: ...Part VIII Appendices This part describes additional Mediant 8000 configuration procedures...
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Page 924: ...Media Gateway Mediant 8000 www audiocodes com Installation Operation Maintenance Manual...