The inmate's prepaid account or your collect-call account has a zero balance.
Active call forwarding on your mobile device mimics unauthorized call routing, triggering an immediate security block. how to unblock a prison call
Security systems used by correctional facilities frequently flag and block Voice over Internet Protocol (VoIP) numbers, internet-based phone apps, and digital cable phone lines due to tracing difficulties. The inmate's prepaid account or your collect-call account