Configuration for Zoiper for Cal.net. As of update vs 1.38, July 13 2016.

• Config > Accounts > Add Account/Config account
• Account name can be anything
• Host: office.cal.net
• Username:[provided by cal.net]
• password:[provided by cal.net]
• Outbound Proxy: 216.57.71.135:5060
• Go to Network Settings >
• Disable “Use RPORT for signalling”