Mouts (generally) can be performed via webif or network settings => mounts.
Via telnet ist the command like that., but more complicate
So first create a folder whrere you find the pc afterwards. Or choose another one.
Then mount like that:
and adapt, username,password, ip_of_the_pc, and the sharename.
Acces will be in /mnt/test or in any other created and available directory.