12
12
5.3 LED’s
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The Phone Line Manager 208B has a total of 11 LED’s: One for power status (on/off), two LED’s to indicate
what line is in use, and eight LED’s to indicate which port is on line. The LED for Line 1 is red and the LED for Line 2 is
green. When a port is connected to a line, the LED color for that port will be red to indicate a connection to Line 1 or green to
indicate a connection to Line 2.
5.4 BUSY TONES
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The Phone Line Manager 208B will produce a busy tone if a port goes off-hook and there is no
telephone line available. It will produce a busy tone on inbound calls if the requested port is already off-hook.
5.5 CPC Detection
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Calling Party Control operates when a device goes off-hook (inbound or outbound) as follows:
Inbound call:
When the Phone Line Manager 208B
answers the call, and it is routed and answered by the appropriate
port device. When the port device answers the call, the Phone Line Manager 208B will look for the CPC signal. If
detected on the telephone line, it will disconnect from the telephone line and look at the port. If the port remains off-
hook, it cannot access the telephone line again until the connected device goes on-hook for 1.5 seconds. The port will
receive a busy tone and any call to that port will receive a busy tone until the port goes back on-hook.
Outbound call:
When a device goes from an on-hook state to an off-hook condition, the Phone Line Manager 208B
will look for CPC after the line is established. If CPC is detected, the Phone Line Manager 208B will hang up the
telephone line and monitor the port off-hook. If the port remains off-hook, the Phone Line Manager 208B will produce
a busy tone and wait for the device to go on-hook and then off-hook for the device to access the telephone line.
When an inbound call tries to access the port that is “locked up,” it will receive a busy tone.
5.6 # (Pound) key
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The pound key is used on inbound calls.
During an inbound call, if an access code is entered incorrectly, the # (pound) key can be pressed to clear the transfer code
buffer to re-enter the correct transfer code.
5.7 Port Lock Up Provision
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The Phone Line Manager 208B is designed to detect a port device not releasing the phone
line. If this should happen, the Phone Line Manager 208B will release the phone line and lock out this device port until the
device goes back on-hook. A rapid flashing LED will indicate which port device is locked out.
5.8 Delay Port Ringing
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When an incoming call is received, the Phone Line Manager 208B
delays the ring to Ports 1 and
2. The caller will hear a phantom ring, but the Phone Line Manager 208B will not ring either port until the second ring. This
feature allows additional time to enter transfer codes. Delayed port ringing only applies to Ports 1 and 2.
5.9 Power Failure
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In the event of an electrical power failure, the Phone Line Manager 208B has been designed to provide
connections to Ports 1 and 2. With no power applied to the Phone Line Manager 208B, Line 1 is connected to Port 1 and Line
2 is connected to Port 2 thus permitting devices connected to these ports access to a telephone line.
