During a one-hour phone call approximately 50-60 MB of data traffic will be used, using the G711 codec. During a phone call conducted through sipgate, there is on average 100 Kbits of data volume per second and direction (Up and Downstream).
If you do not make a phone call, there is only an extremely small amount of data traffic which takes place for the registration of the phone with the SIP Server.
Lower bandwidth codecs are also supported. For a list of the codecs supported by sipgate please click here.