Dubuging M-bus master communication with Linux server

I have an M-bus master with RS232 TCP / IP Server. to communicate with a linux server (debian) using the program "libmbus" ([login to view URL]). had contact earlier in the week mbus-tcp-scan [login to view URL] 10001 Found a M-Bus device at address 23 Found a M-Bus device at address 25 Now I have no contact? mbus-tcp-scan [login to view URL] 10100 mbus_connect_tcp: Failed to setup tcp connection to M-bus gateway on [login to view URL], port [login to view URL] failed: Could not setup connection to M-bus gateway: mbus_tcp_connect: Failed to establish connection to [login to view URL] test to replace remote port error occurs after I used the program "remserial" i run command ./remserial -d -r [login to view URL] -p 10001 -s "2400 raw" /dev/ttyS0 & Telenet [login to view URL] 10100 work fine :/ Need someone to debug and that can bit about this?