CounterPath Bria iPhone Edition 1.2.8 User Guide - Manual (Page 28)

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Incoming Calls Typically ON, in order to receive calls. If OFF, you will not be able to receive calls using Bria.
To change the value, first set Enabled to OFF.
Single Register Applies only if Global IP is ON.
• ON: Bria will will register using a single register request.
• OFF (default): Bria will will register using an unregister and a register.
Only choose ON if advised by your VoIP service provider.
SIP Registration Refresh -
Interval in Secs The timer interval between Bria's attempts to register in order to refresh the account registration.
This value is placed in the “Expires ” header field of the SIP REGISTER message.
Change this value only if advised to do so by your VoIP service provider.
UDP Keep Alive - WiFi
Interval A “keep alive” message is a mechanism for maintaining a “pinhole” through your firewall so that
the account registration is maintained. The interval specifies how often the message is sent (in
seconds).
If you are experiencing problems during a WiFi call (a call made over the WiFi internet
connection), try setting this interval to a lower number such as 20.
UDP Keep Alive - Cell
Interval Same as above, except the interval applies to registrations made over the 3G network, which can
be made on an iPhone (but not an iPod) when you are not in a WiFi zone.
Field Description