With the end of ISDN approaching, more businesses are moving to the future of busines voice services, SIP.
We have created a quick short guide for those on the first step of the journey to SIP to help them understand the benefits, such as:
- Free calls to UK mobiles and landlines
- Geographic and disaster recovery number flexibility
- Advanced call handling features and easy control of entire number estate
- Readiness for the ISDN switch-off
Download our guide.