Hi John,
I looked on the IPPBX section of the DrayTek.co.uk website and did not stumble upon that excerpt. Please could you post the link to the page where it says that?
http://www.draytek.co.uk/products/vigor2820pbx.html
I found this:
The VigorIPPBX 2820 is an IP-PBX (iPBX) integrated with DrayTek's fully-featured Vigor 2820 ADSL Router. It offers a complete replacement to the traditional office phone system and analogue or ISDN lines. An IP-PBX uses your existing network and the Internet to provide company-wide telephony, using VoIP technology instead of regular phone lines or a traditional PBX. This can save hugely on line rental, provides vast flexibility, reduces call costs, maintenance and increases efficiency. IP Phones (such as the VigorPhone 350) can be placed anywhere in your office, or remotely around the world to provide one seamless phone network for your business. Wherever you have an Internet connection, you can have an extension on your PBX. All pure IP calls are free of charge; for calls to the conventional phone network (PSTN) you route via an ITSP 'Trunk' for low cost calls (for example DrayTEL).
and this:
For calls to and from the regular PSTN - the public telephone network, you need an ITSP (Internet Telephone Service Provider) who can provide you with a SIP Trunk, such as DrayTEL. Then, when your users need to make an external call, the iPBX routes automatically via the ITSP gateway on the Internet. The ITSP will also provide you with incoming phone numbers to receive calls. Those calls are routed into your VigorIPPBX 2820 which then passes to the appropriate telephones (extensions).
DrayTek clearly mention twice that PSTN calls are made and received (handled) through an ITSP (Internet Telephony Service Provider) such as DrayTel.
I agree with you on most SME's having a couple of ISDN and an Analogue line for ADSL. Most of our clients use the analogue line for the ADSL as a fax line and make use of the calls that way. There would be no need to route calls via the Analogue line if a couple of ISDN circuits were available then surely the IPPBX would be configured to use those to make calls.
I disagree with you about the misleading advertising regarding the PSTN
PSTN stands for Public Switched Telephone Network, it does not mean an Analogue line, an analogue line is more correctly referred to as POTS line (Plain Old Telephone Service)
PSTN is the gateway network where POTS lines, ISDN lines, VOIP and Mobiles come together to communicate with each other!
The IPPBX2820 can make calls and receive calls via the PSTN using SIP or ISDN trunk so how are DrayTek misleading the customer?
