I have recently (in the past two days) received a strange phone call during the night on one of my SIP phones and I’m not sure of the cause. I have an asterisk server running 2 Cisco SIP phones. In the early hours of the morning (1 call at 2AM and the other 4AM on two separate mornings) I receive a call on one of the phones, the first time it happened it displayed as a call from “Me”. The second time it happened it displayed as a call from “asterisk”. Both times the phone rings about 4 times, then stops. Iâ€™m really puzzled as to what the cause could be? I did have a similar problem a while ago but found it was caused by a faulty PSTN card which I no longer use.
Any pointers would be appreciated.