Bay Networks Marlin, Справочное руководство

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R
EFERENCE
5-28
Terminal adapter (TA) ports may be either internal (the TA expansion card
fits into an expansion slot in the Marlin Bridge) or external. The control of
both types of TA is identical, so any external TA must be of a suitable type
for control by the Marlin Bridge. The requirements for an external TA are:
•
The port must be V11, and switch from ASYNC when there is no call in
progress to SYNC when a call is established.
•
When in ASYNC, the TA must understand Hayes AT commands.
Command Echo should be switched OFF. (ATE0)
•
When the Marlin Bridge drops its READY signal, any call in progress
should be dropped, and the TA should return to ASYNC.
•
When the TA has a call established, it should raise its READY signal.
•
The TA should not automatically answer incoming calls, but should send
a RING message to the Marlin Bridge. The Marlin Bridge will answer
the call only if it is appropriate, by sending the “Answer String” (ATA).