For optimal HD voice quality, various formats are supported such as ADPCM and ALAW via GSM. G.729, LPC10 or SLIN supported up to ULAW. The benefits of signing up with sipkom: "you get additional functionalities as standard from sipkom, where other service providers charge a monthly fee" explains the Managing Director from sipkom, "by utilising the PBX functionality, the heart of sipkom".
Through the sipkom PBX Control Centre, it is possible to create an unlimited amount of extensions and Sipaccounts, which can be managed independently. Here you can specify the routing of a phone call, such as call forwarding to another mobile phone, VoIP to another VoIP provider, GOOGLE Talk, Skype or with the "NEW Device" standard Sipaccount from sipkom.
At a low cost with sipkom, any phone line of a traditional service provider can be replaced, with the numerous free additional features. The numbers available are constantly expanding, e.g. 0800 toll free numbers from Canada, UK, USA - for as little as 5 cents per minute.
The sipkom PBX Control Centre - free and easy to use
For further information: http://www.sipkom.com/