[Asterisk-Users] authenticate problem

[Wooi Koay]

I have a POTS and a sip incoming into my asterisk server.  When I call
the POTS number from outside (cell or landline) and trying to
authenticate myself when enter #, 8 out of 10 times I got an
authentication incorrect.  If I call in to the sip incoming line, 10
out of 10 times the authentication process passes.

Any idea what would have caused the problem?  Thanks!

exten => #,1,Authenticate(1234)
exten => #,n,VoiceMailMain(s100 at default)

WK

p/s I have a clone x100p card from ebay.