User manual

mPBX-100 User Manual

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·NAT

This setting should be used when the system is using a public IP address,

communicating with devices hidden behind a NAT device (such as a broadband

router). If you have one-way audio problems, you usually have problems with

your NAT configuration or your firewall's support of SIP and/or RTP ports.

·DTMF Mode – RFC2833, Info, Inband, Auto.

·Enable SRTP

Enable extension for SRTP.

5) IP Restriction

·Enable IP Restriction

Check this option to enhance the VoIP security for MPBX. If this option is

enabled, only the permitted IP or Subnet mask will be able to register this

extension number. In this way, the VoIP security will be enhanced.

·Permitted ‘IP address/Subnet mask’

The input format should be ‘IP address’+’/’+’Subnet mask’.

e.g."192.168.5.100/255.255.255.255" means only the device whose IP

address is 192.168.5.100 is allowed to register this extension number.

e.g."192.168.5.0/255.255.255.0" means only the device whose IP address is

192.168.5.XXX is allowed to register this extension number.

6) Group

·Pickup Group

If this extension belongs to a pickup group, any calls that ring this extension can

be picked up by other extensions in the same pickup group by dialing the Call

Pickup feature code (default *4).

Note: *4 is the default setting, it can be changed under Feature Codes ->

General -> Call Pickup.

7) Follow me (Call Forwarding)

This function sets inbound call forwarding on an extension. An administrator can

configure Follow Me for this extension.

8）Other Options

.Call Waiting

Check this option if the extension should have Call Waiting capability. If this

option is checked, the ‘When busy’ follow me options will not be available.

.User Web Interface

Check this option to allow the user to login to the MPBX User Web interface,

which can be used to access voicemail and extension recordings. Users may