Setting Up
4-28
9161-A2-GH30-20
September 1997
Table 4-5.
FXO Voice – Slot ss Port p Options (3 of 3)
Rx Gain (dB)
Possible Settings: –10.00, –9.5, –9.0, –8.5, ..., 0.0, +0.5, +1.0, +1.5, +2.0
Default Setting: 0.0
Determines the receive path analog signal amplification, or gain, on the FXO voice port
in decibels. This is the gain (increased signal level) or attenuation (decreased signal
level) applied to the signal.
Rx Gain (dB) only appears if Port Status is set to Enable.
–10.00 to +2.0 – Increases or decreases the signal level. The more positive the
number, the greater the signal level.
Tx Attenuation (dB)
Possible Settings: –10.00, –9.5, –9.0, –8.5, ..., 0.0, ..., +4.0, +4.5, +5.0
Default Setting: 0.0
Determines the amount of attenuation, in dB, that the FXO voice port applies to the
analog signal presented by the user’s analog equipment. Positive TX Attenuation
settings reduce the level of the encoded analog signals sent towards the telephone
network and negative settings introduce gain. When connecting permissive mode
modems and fax machines, a setting of +3 dB should result in a compliant, encoded
analog of less than –12 dBm. The proper setting of this strap is crucial to ensuring
compliance with Part 68, FCC Rules and Industry Canada’s CS-03 Specification.
Tx Attenuation (dB) only appears if Port Status is set to Enable.
–10.00 to +5.0 – Increases or decreases the signal level. The more negative the
number, the greater the signal level (opposite of Rx Gain settings).
Trunk Cond in CGA
Possible Settings: Busy, Idle
Default Setting: Busy
Determines the trunk condition or state that the port is forced into as a result of the
Carrier Group Alarm (CGA).
Trunk Cond in CGA only appears if Port Status is set to Enable.
Busy – Forces the port to Busy during the Carrier Group Alarm.
Idle – Forces the port to Idle during the Carrier Group Alarm.
