Specifications

Excalibur Multirate DAP Installation and Operation
5-52
Automatic Dial
This parameter specifies the conditions that cause the DAP to automatically place dial
backup telephone calls. You can select from the following options:
• DDS Down - DDS goes down due to Out of Service codes, Abnormal Station
codes, loss of multiport framing, or loss of network framing for a user-selectable
time period.
• No Signal - an invalid DDS signal is received from the network.
• Network Down - the DAP dials after the DDS network goes down or an invalid
signal is received from the network. This is the recommended setting for the
originating DAP.
• DTR - The DAP dials when the DTR signal is active. This setting allows
external routers and FRADs to originate dial backup calls.
• None - Automatic dialing is disabled. This is the recommended setting for the
answering DAP.
Note: The DAP will not automatically dial when it is in a test state such as Channel
Network Loops.
Automatic Dial Timer
This parameter allows you to select how long the specified conditions must exist before
the DAP automatically places dial backup calls. The options are 5, 15, 30, and 60
seconds. The recommended setting is 30 seconds.
Switch to Dial
This parameter specifies whether the DTR signal must be present for the DAP to switch
communication to the dial backup telephone line.
Automatic Disconnect
This parameter specifies the conditions that cause the DAP to automatically disconnect a
dial backup connection. You can select from the following options:
• No DTR - the DAP disconnects the call after the dial backup port's DTR signal
goes Off or when it receives a network disconnect signal.
• None - the DAP disconnects the call when it receives a network disconnect
signal.