The HT502 is a powerful VoIP router. The product's inclusion of an integrated high performance NAT router and 10Mbps Ethernet WAN and LAN ports enables a shared broadband connection between multiple ethernet devices. In addition to being SIP 2.0 standard compliant, the product supports Universal Plug-in-Play (UPnP), up to 2 SIP account profiles, and advanced telephony features.

STEP 1
You must first determine what IP address it received. To do this, plug a POTS phone into the PHONE1 port, lift the handset and press the star key 5 times. You will be told the IP address of your device (e.g. 192.168.2.1).

STEP 2
Go to any browser equipped computer on your network and enter the address:

http://<IP ADDRESS>/

(where <IP ADDRESS> is replaced by the address that was given to you in STEP 1.)

STEP 3
You will be prompted to enter password, the default is "admin", then click the "Login" button.

STEP 4 You need to modify only a few parameters from the factory default. They are listed below and can be found on the “FXS PORT1” tab at the top of the page.
Primary SIP Server:		sip.varphonex.com
Failover SIP Server:		sip.siprealm.com
NAT Traversal (STUN):		NO
SIP User ID :		Enter the phone number you chose when you signed up for VarPhonex service.
Authenticate Password:		Enter the password that you chose when you signed up for VarPhonex service.
Name:		Enter your full name.  This will show up as part of your callerid.
User ID is phone number:		NO
Unregister On Reboot:		YES
Outgoing Call without Registration:		NO
Register Expiration:		60
Priority 1:		RFC2833
Priority 2:		SIP INFO
Priority 3:		In-audio

STEP 5 Click on the "Update" button at the bottom of the form.

STEP 6
You will be brought to a confirmation screen on which you will click on the only option available: "Click to view your changes".

STEP 8
Make calls!