Yeah, the Yealink phones are corded. There aren't too many VoIP DECT phones around; Gigaset, Snom and Panasonic are pretty much it i think.
Check to see if your existing DECT phones support the GAP standard (most do). If they do, you should be able to pair them with a Gigaset base station for at least basic calling, although some advanced features of the Gigaset may not be available. I used to have a Gigaset about 5 years ago and paired a cheap, generic £10 handset without problems.
With the OBi devices you don't have to use the Google Talk integration if you don't want, it's just the unique selling point of the OBi since no other ATA does it. I believe up to 2 SIP accounts can be set up on them. I think they also have some smartphone apps that let you dial into the OBi from your mobile and then make outgoing calls through it thus taking advantage of VoIP providers lower international rates, but i haven't really looked into it too deeply.
As for advantages of IP phones over ATAs there are quite a few, but i tend to use my IP phone as just a basic phone so i don't use them much. I do have 4 different SIP accounts set up and it's nice to see at a glance what line a call is coming in on. And as i mentioned before, you can get HD-voice (similar audio quality as a Skype to Skype call) on IP phones when the call is purely IP.



Pages in this thread:
Print Thread
deleted