No cant be changed to 300
Heres example how to enter line
No need to enter N: just select newcamd525 for your protocol if using N line.
slot0 =
{
name: Whatever name you want to call this
ip: Ip address of server
user: User name
password: Password
protocol: newcamd525
deskey: 01 02 03 04 05 06 07 08 09 10 11 12 13 14
filtermode: auto
filterindex: 0
port: Port number
timeout: 3
Admin: 1