•A telephone numbering plan containing an internal number and name for every analogue telephone

•A configured provider

•You need to know the SIP user name and Password of the telephones configured in the COMtrexx

•The PBX system used as the a/b gateway

−Public switched tel. networks > VoIP > Accounts

•One account for every analogue telephone:

−New > settings under Adding a device > Save

•Make the following settings for the account:

−Provider: int Auerswald PBX sub system IPv4 V201

−Account name: Name

−Connection type: PTMP connection

−Use: on

−Network Provider > Account has emergency call ability: off

−Access data > Exchange line access number (account number): Digit in the free telephone numbering range + internal number from the telephone numbering plan

−Access data > Username: SIP user name of the telephone configured in the COMtrexx

−Access data > Password: Password of the telephone configured in the COMtrexx

−Phone Numbers for PTMP connection > Multiple subscriber number (MSN): internal number from the telephone numbering plan