User's Manual

Chapter 5 Setup Menu FCD-IPM Installation and Operation Manual
5-60 Interface Parameters Menu
Polarity (polarity reversal, also known as Wink Start Reversal)
When polarity is configured as Enabled, the polarity signal is received from E1
either on the B bit (while the on/off hook from T1/E1 parameter is configured to
A bit or A bit inverted), or on the A bit (while the on/off hook from T1/E1 parameter
is configured to B bit or B bit inverted).
FXO Voice Interface
VOICE PARAMETERS: ( Device name - FCD-IPM , FXO)
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1. TX/RX gains
2. Coding law : [A LAW]
3. On/off hook from the E1 on : [A bit]
4. Ring Detection to the E1 on: [A bit]
5. Default ABCD to the E1 : [0000]
6. Polarity : [Disabled]
7. Signaling Feedback : [Disabled]
8. Out of Service method : [Forced Idle]
ESC - Return to previous menu
Choose one of the above:
Figure 5-65. FXO Voice Interface
TX/RX Gains
Select this parameter to specify the nominal input level of the receive and transmit
paths for each voice port. The input level range is –10 to +5 dBmm.
Coding Law
Select this parameter to specify the compounding law to be used by the voice
channels. The values are:
A Law coding for E1 links
On/off hook from the E1 on
Select this parameter to specify the receive mode for on/off hook signaling from E1
into FXO. The values are:
A bit When the received A bit signal from E1 equals 1 then off hook will be
indicated in the FXO interface
When the received A bit signal from E1 equals 0 then on hook will be
indicated in the FXO interface