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to Wi-Fi on the other hand will be performed if a known network with sufficient quality
gets into range during an ongoing cellular call.
11.2 Dual Mode
Select Cellular Only, Single Mode or Dual Mode:
If set to Cellular Only, the AMC will only allow connections to cellular networks.
In Single Mode it allows cellular networks and Packet Data for signaling (Packet Data
and/or Wi-Fi, this depends on the device), i.e., if you want to have SIP signaling over
Wi-Fi but call-setup signaling and media over the cellular network, you need to select
the Single Mode setting!
The setting Dual Mode allows Voice-over-Wi-Fi, but it requires that the Blackberry de-
vice supports Wi-Fi and that the required settings in the native OS are made.
Consumption of Packet Data
The Packet Data setting lets you specify when packet data (for example
Packet Data) should be used; refer to 12.4.
Native-Dialer Dependent
Whether a data channel is established via Wi-Fi or via Packet Data depends
on the Network Preferences you have chosen in the native Blackberry appli-
cation. If a preferred Wi-Fi network is available, this network will be used for
the data channel.
11.3 Network Preferences
Unlike Wi-Fi connections, cellular connections cannot carry data. A data channel is not
necessary to make use of certain services, such as accessing PBX (in-call) features,
but it makes signaling faster. Availability of data channels depends on your provider and
on your contract. Many contracts come with a certain amount of data traffic included
Packet Data.
The Packet Data settings described here allow you to determine if and how the AMC
is allowed to use cellular Packet Data. You can choose to generally disable it for the
AMC (Off ), use it exclusively for HTTP(S) requests (Minimal, i.e. Corporate Contacts
access, HTTPS Callbacks etc.), or allow its usage only in your provider's network (Local
Network ). To use it whenever needed for a system registration (no Voice over 3G) set
this to GPRS Dynamic.
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11 User Settings
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