Instruction manual

China – Supervised Analog Lines Page 1019 of 3156
Features and Services
Operating parameters
This feature applies to Intelligent Peripheral Equipment that support the
Supervised Analog Line feature only.
Disconnect supervision is not provided to the terminal device if the
Meridian 1 does not receive any indication of the far end releasing.
If the Meridian 1 does not receive any answer indication, and answer
supervision is not extended to the terminal device following an assumed
answer condition, disconnect supervision cannot be extended when the far
end disconnects.
If the Battery Reversal Supervision feature is configured for an analog line on
an analog card that does not support battery reversal, the battery reversal SSD
messages from the Meridian 1 software are ignored by the analog card
firmware. In this case, no battery reversal signal is extended to the terminal
device.
If the Hook Flash Disconnect Supervision feature is configured for an analog
line on an analog card that does not support hook flash, the hook flash SSD
messages from the Meridian 1 software are ignored by the analog line card
firmware. In this case, no hook flash signal is extended to the terminal device.
If the system initializes while an outgoing call originating from an analog line
is established and battery reversal is activated, unprotected data for the call is
lost. In this case, battery reversal remains activated when the call is cleared
down by either party. However, the line status is reverted to normal when the
next outgoing call is answered and then cleared down.
If the hook flash timer is set equal to or greater than the on-hook timer,
activation of the hook flash disconnect signal also causes the card to send an
on-hook message and then an off-hook message to the Meridian 1. In this
case, if the user remains off-hook after the far end disconnects, dial tone is
received and an outgoing call can be initiated.
Battery reversal supervision is supported on the following cards:
• The Enhanced Extended Analog Line Card for China NTRA08AA or
later vintage.