Phones - A-Series IP Phones for Asterisk Overview
This article provides links to several resources which may be of interest to A-Phone users.
Sangoma’s A-Series is a line of budget-friendly IP phones for Asterisk. The series includes four models:
A30: An executive-level gigabit phone with 6-line registrations, full-color LCD display, a scroll key for accessing up to 45 contacts, and 2 switched 10/100/1000 Mbps Ethernet ports.
A25: A mid-level gigabit phone with 4-line registrations, two full-color LCD displays, a scroll key for accessing up to 30 contacts, and 2 switched 10/100/1000 Mbps Ethernet ports.
A22: An entry-level gigabit phone with 2-line registrations, a full-color LCD display, and 2 switched 10/100/1000 Mbps Ethernet ports.
A20: An entry-level value phone with 2-line registrations, a full-color LCD display, and 2 switched 10/100 Mbps Ethernet ports.
For additional information regarding the products, you may wish to review the following materials:
Note: The Phones - A-Series IP Phones for Asterisk Overview has a wealth of detailed information in addition to the articles below.
There are multiple ways to provision an A-Phone. Please review the following documents for configuration support:
IMPORTANT: A-Series phones are designed for the use and benefit of the Asterisk community. A-Series phones are not supported for use with Switchvox. As with most any SIP device, it may be possible to manually register an A-Phone for use with Switchvox, but no additional assistance is provided by Sangoma for this configuration beyond these linked documents. Issues arising from such a configuration with Switchvox will not receive troubleshooting support either by way of A-Phone warranty or Switchvox Subscription. For supported phones designed for use with Switchvox, please see the 
Phones and Hardware - Sangoma Technologies .
Additional articles for specific settings and FAQ: