Buch1 > Using the Configuration Manager > Public switched tel. networks > ISDN > Settings of the PTMP Connection > Multiple Subscriber Numbers
Multiple Subscriber Numbers
Proceed as follows:
• Separately for external S0 ports
• Using the Configuration Manager (page Public switched tel. networks > ISDN > PTMP connection)
Requirements:
• External S0 port (optional, see Technical Data in the Instructions)
• Connection type PTMP connection on external S0 port
PTMP CONNECTION
Selection of the PTMP connection to be displayed/configured.
Multiple subscriber number (MSN)
The PTMP connection has up to 10 multiple subscriber numbers. The network provider assigns the phone numbers for the connection. (Select  New to enter.)
Phone number for CLIP no screening
Requirements:
• Set up phone number
• CLIP no screening switched on for the ISDN connection
Customer-specific phone number (e.g. a service phone number) that is transferred to the destination by the exchange line without its correctness being checked.
Name
For display purposes on the system phone.
Ringtone
The ringtone specifies which sequence of sounds is used to signal external calls to internal subscribers on the PBX.
* Note: See Ringtones for information about exceptions to signalling and sound sequences.
Recording on
Requirements:
• Configured voice mailbox for call recordings (page Devices > Voice mail and fax boxes > Phone numbers). In order to see the box here, no owner must be assigned to the box.
Selection of the voice mailbox, which will be used for the function Call recording.
A voice mailbox for the function Call recording can be assigned to only one connection Analogue / ISDN / VoIP.
* Note: If the voice mailbox for call recordings is removed from the list (Selection of ---) and becomes a box with the function as answering machine, all recordings are deleted from this box after confirmation.
* Note: The function Call recording is available only in certain countries.
 New
Adds a new phone number.
 Delete
Deletes the entries marked in the list.