Interactions with standard GSM voice calls
As a general statement when you receive a standard voice call during a secure call (VoIP), you may:
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The above statement is not applicable to the iPhone platform. In case of Apple devices the secure call is immediately put in an "on hold" state until the GSM call is closed. The secure call can be retrieved afterwards if the other party is still waiting. |
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- Android: The secure call audio is mixed with the ringings
- BlackBerry: The secure call is silenced as long as the phone rings
- iPhone: The secure call is immediately put in an "on hold" state until the GSM call is closed.
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As soon as the "on hold" state starts, the party "on hold" hears some music. This music is performed by
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Limits of protection provided by
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We suggest you to consult a security expert to protect yourself against these type of threats. |
Call quality on the move
It may take longer time to establish a connection or you may experience short interruptions in the audio when traveling by car or high speed train. This is because you are switching from one GSM network radio cell to another. Call quality depends on the local infrastructure of the mobile operator.
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No perceivable audio problems of a
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Network type and call quality
Secure calls with
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The following figure demonstrates different network types, ordered by quality and bandwidth. Bandwidth determines the amount of data transmitted per second. Latency determines the time required for the data to reach its destination.:
To check your mobile phone network, check the symbol next to the signal bar:
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Use Wi-Fi when available. There are no additional costs and call quality will be definitely better. |
Data plan rates
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When using
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Disadvantages of a limited traffic plan
Traffic plan limited in data | When
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Traffic plan limited in time | As
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Differences between secure and standard calls
Delays in establishing a connection | To establish a connection with the called party,
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Audio delay | Unlike standard calls VoIP secure calls may be subject to an audio delays from 1/5 of a second to a maximum of two seconds. This depends on the underlying technology of the data transmission network. The better the connection, the smaller will be the audio delay. | |||||
Different ringing tone |
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Battery life | Internet connection may lower the battery life of the mobile device. Average battery consumption may increase from a minimum of 5% to a maximum of 35% based on the type of network used by the Internet connection.
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