Samsung SPH A540 secret menu/functions

Ok this is something weird that i have found on my phone from telus...first if u go to menu > wireless web> press 0 you will be prompted a password if u enter your phone password u will gain access...not u can change the gateway id and the port #. This is not that interesting but if u go to menu>setup>and press 0 u will be prompted for 6 digit password..(on the top of the windows with the password it will say field. serv ) i am not sure what this menu does but i would definitely want to see. Does anyone know the field serv. password? I final discovery is if u go to menu>sound> press 0 a window with 4 digit password. On top of that window it says TTY/TDD. Does anyone know the password? Anyways i will be very happy if anyone out there gives me the password...Anyone else noticed that?????

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The code for the tty/ttd is #889 and by the way i'm looking for the field serv code ( 6 digits). I have a Samsung SPH-A540 from Telus...

Thank's.