Understanding the Network Settings under Server -> IP Configuration

The IP Configuration page includes all information on the networking of the Switchvox. Switchvox only uses the eth0 interface, so only one network is configurable.

To access the IP Configuration page log into /admin -> Server -> IP Configuration.

*It is very important to note that saving this page at any time will result in a software restart that will drop all current calls and logout any login queue members from all call queues.

Once on the page you see see the Gateway Address. The Gateway IP address is the address of the machine the PBX sends outbound traffic. This will typically be the address of their router.

DNS Addresses: These are the servers (either local or remote) that the PBX will use to translate hostnames into IP's.

Allowing NAT Port Forwarding:

1. Selecting Yes to allow NAT port forwarding to the PBX. This option is useful if you need to handle calls going to and coming from an external network and the PBX is behind a router that performs NAT.

2. A couple situations where you would need to enable this is if the customer is using a SIP provider that resolves to an external IP or if they have remote SIP phones that connect over the WAN.

External IP Address / Hostname & Lookup External IP:

1. This should be the external IP or the public IP address of your router. If you are not sure what it is, click Look Up External IP Address to automatically find it.

2. SIP phones that are outside of your network must use this external IP for registration.

Eth0 Interfaces:

1. This is the IP and subnet mask addresses for the PBX. These were first set when you installed the Switchvox software. You do not normally need to change this info after the installation.

2. We only support the use of Eth0 at times you may see Eth1 or Eth2 even, we do not support anything but Eth0 interface.

3. If a customer is using anything but Eth0 it is required that they swap interfaces to Eth0 and remove the data from the other Eth fields as this can cause audio issues, dropped packets and dropped calls.

Advanced Options:

1. Hostname: This will be the domain name of the PBX. You can set a specific hostname/domain name for the Switchvox if you have a DNS entry for it.

2. IP ToS: This lets you set the ToS or DSCP field in VoIP packets sent by the Switchvox. This field is used by firewalls and switches to distinguish specific types of traffic to apply network QoS rules. You can use this field to favor the VoIP traffic in the network for better quality. Setting this is not a requirement for prioritizing traffic in your router. It's just one way to ID VOIP traffic. If you are not explicitly prioritizing this field in your network equipment, changing this option will have no effect on your VOIP quality.

3. Additional Local Networks: Use this section to list any additional networks that are not separated by a NAting router. An example when to use this would  be if you separated the voice and data into two different subnets on the same NATing router or if there is more than one network (such as a remote office VPN) connected to the local network. You would list that remote VPN network in this list. Make sure to add the subnet mask notation on the network (e.g., 192.168.0.0/16).