My asterisk answers while a call is on my PSTN phone line


This is my very first experience with Asterisk. I have the Asterisk connected to my PSTN phone line via a X100P PCI card. Everything works fine except that the Asterisk plays the announcement when an incoming call is answered on my regular PSTN phone.

The is the lines I added in zapata.conf
channel => 1

And this is the lines for my voicemail in extensions.conf
exten => s,1,Wait,7
exten => s,2,Answer
exten => s,3,DigitTimeout,5
exten => s,4,ResponseTimeout,10
exten => s,5,BackGround(asterisk-recording)
exten => #,1,Hangup

exten => 2,1,Voicemail(u4200)
exten => 3,1,Voicemail(u4300)

How can I configure the Asterisk not to answer the call if it’s already answered by my regular phone?

Thanks in advance.

see this thread