Glossary
PBX
A private branch exchangeA Private Branch Exchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.
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A trunk line is a circuit connecting telephone switchboards (or other switching equipment), as distinguished from local loop circuit which extends from telephone exchange switching equipment to individual telephones or information origination/termination equipment.
When dealing with a private branch exchangePrivate Branch Exchange (PBX), trunk lines are the phone lines coming into the PBX from the telephone provider. This differentiates these incoming lines from extension lines that connect the PBX to (usually) individual phone sets.
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A Secure Call is a voice connection which can't be wiretapped and it runs over Voice Over IP (VoIP) communication protocol.
is is the PBX committed to perform Secure Calls both end to end and end to site. It differs from a standard PBX for exposing just the Secure Call service to VoIP clients clients and can be connected to a standard PBX via SIP Trunks if configured accordingly.
is is the VoIP client for Secure Calls connections. It has to be used along with with.
Jitter
In VoIP systems audio signal is split into multiple packets, which are sent over network. Due to network equipment behavior, packets flow is never regular and constant. Especially on mobile/radio networks packets are delivered in bursts, leading to irregular and variable latency. Jitter is the variation in latency as measured in the variability over time of the packet latency across a network.
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The Automatic Activation is the way of create new users automatically without any need they interact with anybody. As from user's side the procedure is that he/she gets first an invite SMS or E-Mail useful to download the application
and and then a
configuration SMS or
E-Mail which provides automatic configuration of the client itself. All the user has to do is to follow the links into both the Texts/E-mails and
would would go automatically on line.
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The Provisioning is the configuration needed for delivering both for the the
application application and its configuration and nowadays it's used by the Automatic Activation only. ...
The Audio Messaging is the means used by by
for for communicating to an user about the failed calls. You have several messages that can be spoken and each of them can be localised in English, French, Italian, Spanish and German.
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Secure Message is a text message that can be sent and received only by using using
and and that shares the same communication infrastructure of Secure Call. The maximum length of each message is 160 character.
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Call Roaming is specific configuration set up by default on both both
and and. It let any call to continue even if one network change event occur (e.g: wi-fi network got lost in favour of 3g data mobile one). During network change itself the call is muted but as soon as any connection is again available, then voice stream is back streaming. Call roaming is subject to Strictrtp and Rtp timeout options
in in.