Hello, i have a 3cx 8.0.9532 and a Patton 4552. I like to get calls the my 3cx Phone System on a normaly ISDN Connection with 10 MSN. the Problem is, that 3cx Phonesystem get's every call, and tell the caller "the person is not avalably". Because, the called number is not for 3cx, it's for an other router! I have to select the Phone MSN what 3cx have to receive. If i go te PSTN devices\Potton TO "Inbound Parameter" and make a new filed SIP Field Varaiable Custom Value TO: User Part Custom Field 201010 3cx take only the call for 201010, when i remove it, 3cx take every call. I test config like: TO: User Part Custom Field 201010,201011,201012 TO: User Part Custom Field 201010;201011;201012 but nothing works. if anybody there with information for me, what i can do to configurtate the ISDN Numbers for 3cx?? thank yoou!