[Asterisk-Users] PCPhoneline.com FXS to FXO Port Converter and SIPURA ATA

[Bill McCready]

For users using the PCPhoneline.com FXS to FXO port converter with a Sipura
ATA who experience DTMF detection problems from the PSTN, there is an input
gain field located in the administration area of the Sipura ATA that may be
adjusted to address this problem.  The input gain field is often defaulted
on the Sipura ATA to a negative value causing several decibels of volume
loss such that the Sipura ATA cannot detect the incoming DTMF touchtones
dialed remotely.  To resolve the problem you should increase the value of
the input gain field one step at a time and retest until the problem is
resolved.