asterisk users - Aug 2005 - Avaya 4602 SIP Internal Dial Plan

Hi,

I'm trying to disable the internal dial plan of an Avaya 4602 with SIP 
firmware 1.1 but couldn't find how to do it.

Even if I configure a custom Dial Plan it keeps adding other builtin 
rules to my dial plan.

Ex:

Configured dial plan:

DialPlan        19xx|7[8-9]xx|0xxxxxxxxxxxxxxxxxxx+

Reboot. On the syslog it shows:

Aug 17 12:42:12 192.168.0.115 DigitMap: 
19xx|7[8-9]xx|0xxxxxxxxxxxxxxxxxxx+|xx+*|xx+#|*0[1-9]|*1[0-9]|*2[0-5]|*6[0189]|*7[0-35]|*74xxxx

The phone mix my dial plan with this rules:

xx+*|xx+#|*0[1-9]|*1[0-9]|*2[0-5]|*6[0189]|*7[0-35]|*74xxxx

Anyone knows how to disable this ?

No info on Administrator's Guide about this "hardcoded dial plan"
:)


Thanks,

     Leonardo