Especially in the case of troubleshooting, it may be useful to setup Zoiper. This guide describes how to do so.

While Zoiper Premium and Zoiper Lite are functional with Sharpen running as an iPhone app, we do not endorse their use outside of testing.

If running for perpetual commercial use, you should purchase/download the product and understand the tool will not be supported by Sharpen.

Instructions

Navigate to Sharpen Technologies Inc.
Locate your extension and choose the edit button
Take note of your “username”, “password”, and “Server Address” fields. Leave this page up to copy paste from.
Open Zoiper Premium after it has been installed from ‎Zoiper Premium voip soft phone, or open Zoiper Lite after it has been installed from ‎Zoiper Lite voip soft phone
Select “Settings” in the lower right
Select the plus icon in the upper right
When asked if you already have an account, select “Yes”
Select “Manual Configuration”
Select “SIP Account” when prompted for Account Type
Enter the Account Name you’d like (e.g. “John Doe - Sharpen”)
In the “Domain” field enter your server address from the extensions page, but with the following modified format:
- If your server address was listed as us1.vbx555.09.f.sipvbx.com on the extension page then you would enter us1.vbx555.sipvbx.com in Zoiper.
Enter your credentials from the extensions page (username and password)
Enter Caller ID (optional)
Skip the Advanced Settings and Additional Settings
Select “Register”
You should see Registration Status change to OK, along with a battery life warning.
Press “OK” to exit out. From the main page you can navigate to the dialpad to place a call
You should see "found" for “SIP UDP” during the test, others may fail, that is fine.
That's it! Please remember use of 3rd party clients is not supportable by the SharpenCare team.

Setting up Zoiper with iPhone