The advantage of using SIP Trunks instead of your ISDN is as follows:
Your expensive ISDN solution will be replaced by SIP Trunks, which in most circumstances equals a significant cost saving on the company’s telephony bills.
The only prerequisite for switching to a SIP hosted PBX solution is that your current PBX system supports SIP trunks.
Not all PBX systems support the aforementioned, therefore we also offer the opportunity to purchase an ISDN to SIP adapter, therefore opening up for compatbility between your system and SIP Trunks.