CounterPath Bria Android Tablet Edition 1.0.3 User Guide - Manual (Page 26)

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URI Format
Use tel: URI
Change this value only if advised to do so by your VoIP service provider.
• On: Prefix SIP URIs with tel://
• Off (default): Prefix SIP URIs with sip://
Keep Alive - Wi-Fi Interval A “keep alive” message is a mechanism for maintaining a “pinhole” through your firewall so that
phone calls proceed smoothly. The interval specifies how often the message is sent (in seconds).
If you are experiencing problems during a Wi-Fi call (a call made over the Wi-Fi internet
connection), try setting this interval to a lower number such as 20.
Keep Alive - Mobile Interval Same as above, except the interval applies to calls made over the mobile network.
Field Description