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When I try to connect to the ISP as non-root user then I get a message 
"Cannot open /dev/ttyS1: Device or resource busy". It seems that a 
non-root user cannot access modem. The /dev/ttyS1 appears as,

crw------- 1 root    tty     4,  65  June 26 14:20 ttyS1 

What does "c" mean? Can/Should I change the mode to 0644 for other users
to access it?  

Rajen


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