Specifications

4.9.1 Advance Settings
4.9.1.1 Stun Server
Enter a STUN Server IP, to find out its public address when clients behind the NAT. Usually ITSP will
provide these settings. If using Public IP, keep this field blank.
4.9.1.2 NAT Traversal IP
Enter the NAT Traversal IP address i.e. Public IP Address, to communicate with Public Network when
NanoPBX is behind the NAT. This IP address will substitute in all outgoing SIP messages instead of Local
IP address.
4.9.1.3 RTP Range
Enter the RTP range for voice communication. By default RTP range would be 5000 to 31000.
4.9.1.4 Enable T.38
To make use of ITU-T T.38 standard for faxing, select ‘yes’. Otherwise, select ‘no’ to send the FAX via
Pass- through mode. The default is yes. Here T.38 is the preferred method because it is more reliable
and works well in most network conditions. If the service provider does not support T.38, you can use
Pass-through mode which will use G.711u Law codec.
4.9.1.5 Message Wait Indication
Message Wait Indication (MWI) is to indicate the user regarding the new voice messages in mailbox. On
Analog extensions this is indicated by shutter tone when the handset is picked for dialing. And the same
message waiting information will also sent to IP Phone for the IP Extension users. IP Phone will indicate
the same Message Waiting Indication to user by either shutter tone on handset or by blinking the LED on
IP Phone.
4.9.2 Hardware Profile
4.9.2.1 Phone Profile
This sets the electrical impedance of the FXS port. Select one of these choices like 600 ohms, 900 ohms
or based on your country. The default is 600.
4.9.2.2 FXS Ringing Profile
This sets the ringing profile of the FXS port. Select one of these choices based on your country. Preferred
value is Default.
4.9.2.3 Line Profile
This sets the electrical impedance of the FXO port. Select one of these choices like 600 ohms, 900 ohms
or based on your country. Preferred value is Default 600 Ohm.
4.9.2.4 FXO Dialing Profile
This sets the Dialing characteristics and Ring Detect Settings on the FXO port. Select one of these choices