Summary: I wish I would have ditched AT&T a long time ago. The internet call systems also give you tons of flexibility on how to handle individual callers - all of those steady calls from that one annoying candidate now get automatically routed to a bad number signal.
Pros: Pretty easy to setup. I ported my landline number over to callcentric and setup up the PAP2. Crystal clear calls so far.
Cons: You have to get most of your documentation from the internet but your voip provider should have set up instructions for you
Pros: Accidentally purchased this instead of the SPA2102 (thought about it a couple weeks ago and went to buy and remembered PAP2 from a while back). Came with 3.6 series firmware, upgraded to 5.1.6 (dated 2007). I had no trouble connecting to asterisk and getting calls going in a couple minutes.
Cons: Not really a con, but I wish I'd bought the SPA2102 only because I like having devices that are still getting firmware and the SPA2102 has improvements in SIP and faxing. However for what I'm using this for (a single cordless phone) it does the job perfectly.
Summary: I noticed that if the internet modem loses it's IP address to power failure or whatever that you have to manually reboot the Cisco afterwards. Overall, if you have to have a land line for cheap, then it's worth it's weight in gold.
Pros: Pure digital phone service WITHOUT the computer being on. NO static ever again. All the features of a normal phone plus more. Pay only when you talk using CallCentric @ 2 cents/minute, nationwide.
Cons: Mind numbing settings that have to be exact. Need to follow a 3 foot set of config. instructions. Luckily only a few settings have to be changed. Not really for technically challenged people, I'm guessing.
Cons: Somewhat hard to configure, but I had settings from my SIP provider to configure per their specs. Very little in the way of documentation included with unit. I could not get the phone to get dial tone or ring. After wasting several hours trying to troubleshoot by myself and with my VoIP provider,...
Summary: It took me longer to set up a VoIP account with a provider than it did to install this adapter. I use CallCentric and their site had step by step instructions on how to set up this particular model.
Pros: easy setup, small size, great price, works like a charm
Summary: Google "mango pap2t" for some good configuration tips. I read some posts that suggest the Sipura manual may be a useful reference.
Pros: It arrived yesterday and today I have it working with Asterisk. There are zillions of options from network and SIP fine tuning to dial tones and ringing cadence. I have one analog phone that takes a dialed number and another one as a "bat phone" that automatically dials when picked up. FWIW, the ...
Cons: The documentation tells how to configure the most rudimentary settings, but does not cover the important settings. You just have to connect with a web browser and figure them out. Among other things, you will most likely want to fiddle with the dialplan, almost hidden in the bottom of the line1/l...
Summary: I use this in combination with IpKall, SipSorcery and Google Voice to end up with a completely free land-line phone that can dial outbound from the handsets. Costs the same as MagicJack, but it's free forever.
Pros: This thing works flawlessly - worth every penny.
Summary: One of the best purchases I've ever made. Used to pay over $20/month for the phone line. Now with help of Gvoice and Sipgate or Voipdiscount your phone can be free or at a minimum price.
Pros: Easy to setup, has 2 lines, works, very stable!
Cons: Have some setup issues with Netgear router, but after few months of troubleshooting, found that it was Netgear's Voip protocol issue. Just disabled it and everything is just perfect!!! Have never seen it on sale. Not free