I bought a unlock key for a Voip number from freephoneline and I got all the details last month. I did few basic tests and it worked.
I cancelled other voip service provider today and I try to use the the freephoneline number.
I use a Talkswitch PBX which work without any issues with another 2 voip lines, one from Babytel, one from voip.ms BUT with the freephoneline I have many, many issues:
Outgoing calls
1. calling out is a hit and miss ... 70% of the calls I try to place are getting dead air or I hear a "metal crack" sound and then dead air.
2. when I manage to reach a number and I get a voice mail OR an IVR message ... I can hear nothing ...not the IVR message, nor the recorded message from the voice mail
Incoming calls
3. I put the freephoneline number to end into an IVR. If you call the number, the IVR rings but then OR the calls ends ...OR if the IVR kicks in prompting for the caller to pres 1 or 2 ...even if they press ...nothing happens (like the Voip # do not "read" the DMTF tones)
I called the support line but I am told to use the online support and then it hungs up.
I totally understand that once you pay $50 for the key and then the service is free you should not expect too much ... but neither that less

Any idea what it can be? My number is an 438-388-xxxx
Thanks,