Telephony error:D

Hello, i saw in my mikrotik Telephony error, from an ip address.. i dont know what is this, the message show like this:
"telephony error Incoming call from xxxxx[ip address] to 00525552680000 denied, no device to call to

can anybody explain me what is thiss..Thank You

REguardss…

what version do you use?.. where do you get ‘telephony’ package? =)

i use 2.9.6 and i dont use telephony package for nothing, the telephony sector is dafault from installation..