At the end of 30 minutes of negotiation CenturyLink agreed to send, in the afternoon of Thursday August 1, 2019, a technician to try to repair the telephone line. For several hours, the cellphone has responded to every attempt to telephone with the statement: "The mobile network is not available." I am well. I have spent much time trying to establish access to the computer from the Internet. I suspect that the Reolink installation, which I intend to preserve, is blocking ftp, sftp and ssh access to the local computer. An interesting anomaly is that the nominal IP address 74.4.39.208, which is reported by my own probes of the IP address, and confirmed by the XYCEL C1200X modem and does not ping, but is replaced by No-IP with 67.235.96.33, which does ping, but does not accept ftp, sftp or ssh. Here's the documentation: The recent Internet Address was : 74.4.39.208 on Tue Jul 23 10:01:02 EDT 2019 The current Internet Address is : 74.4.39.208 Tue Jul 23 12:21:44 EDT 2019 /home/meyer% ping 74.4.39.208 PING 74.4.39.208 (74.4.39.208) 56(84) bytes of data. ^C --- 74.4.39.208 ping statistics --- 17 packets transmitted, 0 received, 100% packet loss, time 16366ms /home/meyer% ping meyerkonnarock.ddns.net PING meyerkonnarock.ddns.net (67.235.96.33) 56(84) bytes of data. 64 bytes from tn-67-235-96-33.dhcp.embarqhsd.net (67.235.96.33): icmp_seq=1 ttl=62 time=66.1 ms 64 bytes from tn-67-235-96-33.dhcp.embarqhsd.net (67.235.96.33): icmp_seq=2 ttl=62 time=64.4 ms 64 bytes from tn-67-235-96-33.dhcp.embarqhsd.net (67.235.96.33): icmp_seq=3 ttl=62 time=66.5 ms ^C --- meyerkonnarock.ddns.net ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 64.474/65.712/66.514/0.936 ms /home/meyer% Maybe I'm too old to learn. If I remember correctly, we agreed that I should try to telephone you at 2:30 p.m. today, and I will try to do so. I hope that your are well.