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Avaya Definity TN792 Duplication Interface.
- In high and critical reliability R7 or later si systems, copies contents of memory from the primary Switch Processing Element (SPE) to a standby SPE, so that the latter can take over immediately when the former fails
- Two TN792 circuit packs required, one for primary control carrier and one for standby
- You can replace TN772 duplication interfaces with TN792s, but you must replace them in pairs
- A TN772 cannot communicate with a TN792
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