User guide

System Administrator’s Guide – Release 7.5
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Revised: April 9, 2013
Page 146
2. Go to the Server Admin page. For phones, go to Phone System >
Handsets. Create a Handset Preference Group for the remote phone with
the adjusted RTP port range; see Handset Preference Groups on page 71.
For port expanders, go to Network > Port Expanders and click on port
expander Description.
3. Set the RTP port range for the phone or port expander to 16384 or 16393.
4. Forward the required IP ports through the Firewall at the remote site, per the
table below: 0.
Port Type WAN LAN Protocol
BLF 2088 2088 UDP
SIP 5060 5060 UDP
RTP 16384 - 16393 16384 - 16393 UDP
17.1.3 Multiple Remote Devices behind the Same Firewall
If there is more than one remote Allworx device behind a firewall, change the settings
on the firewall and the phone or port expander to enable this configuration.
1. Go to Config > Network Settings menu for phones. Go to Config Mode
page for port expanders. Change the following settings:
• DHCP – Disabled
• Remote Plug ‘n’ Play key – Set according to the procedure in, Phone or
Port Expander behind a 3rd-Party Firewall on page144.
• Boot Server IP – Set according to the procedure in, Phone or Port
Expander behind a 3rd-Party Firewall on page144.
• Phone/Port Expander IP – Choose an address that is consistent with the
remote site’s network.
• Netmask IP – Network Mask of the remote site’s network.
• Gateway IP – Gateway IP of the remote site’s network.
2. Configure VoIP settings for the phones and/or Port Expanders.
For phones, navigate to PHONE SYSTEM > Handsets and create a different
Handset Preference Group for each remote phone.
For port expanders, go to Network > Port Expanders and click on the port
expander Description. Allocate 10 ports for each device in the standard range
(e.g. phone1: 16384 to 16393, phone2: 16394 to 16403). Choose a different
SIP port for each device, starting at 5060 (e.g. phone1: 5060, phone2: 5061).