PS2 Network Adaptor Problems

I can't make a dial up connection setting on my ps2 network adaptor. I'm not sure but could it be because I live in Australia that I can not use the dial up feature on the adaptor?

The problem is that after entering all the details in the dial up account setup, the ps2 starts testing my phone line. While testing the phone line a message appears saying it can not detect a ring tone. This isn't true as I can hear the adaptors buzzer making the usual ring tone noises. As a test to see if the adaptor can dial, I made a dummy AOL account, in dialing options, turned on "i have voicemail on this phone line" (so it doesn't bother checking for a ring tone). The adaptor could dial numbers as I could hear them through the buzzer.

I decided to look at the DIAL_CXT and DIAL_SPD network configuration files on the start up disc on computer, I discovered a couple of strings relating to the activation of dial tone detection. My question is there some way to modify the strings so that the adaptor doesn't check for a dial tone? Also, whats the "+GCI" country code? I have pasted the text of the config file below.


# <Sony Computer Entertainment Inc.>
#
# $Id: dial_spd.cnf,v 1.4 2001/12/14 09:49:01 ksh Exp $
#
# jwang 20020327:
# - localized for US country code, "+GCI=00" -> "+GCI=B5"
# - enabled dialtone detection, "X3" -> "X4"

# dialing_type_string "<tone>" "<pulse>" "<any>"
dialing_type_string "ATDT" "ATDP" "ATD"

# chat_init
# Please set appropriate country code with "+GCI" command.
# ex) "00": Japan, "B5": US
chat_init "TIMEOUT 120\
ABORT NO\\sCARRIER\
ABORT ERROR\
ABORT BUSY\
ABORT DELAYED\
ABORT LINE\\sIN\\sUSE\
ABORT NO\\sDIALTONE\
ABORT NO\\sANSWER\
ABORT BLACKLISTED\
\"\" \\dA\\pT\
OK \\pAT+GCI=B5\
OK \\p\\pAT&FL2W2X4\\-STE=1\
OK \\c"

# chat_dial
chat_dial "\"\" \\D\\T\
CONNECT \\d\\c"

chat_answer "RING ATA\
CONNECT \\d\\c"