Possible to use Obi as analog to VOIP bridge without other hardware?
GnatGoSplat:
Is there an Obi device that will let me easily make and receive calls on an analog (PSTN) line using a standard business VOIP phone on one line, and connect to my personal Google Voice on a 2nd line?
I've seen Obi110 has an FXO port, and also OBILINE seems to add an FXO port to Obi's with USB port. A lot of tutorials I've seen use FreePBX or some other PBX or SIP server along with analog to VOIP gateway. I'm wondering if an Obi device can work as a gateway without the addition of some other hardware/computer running a PBX software. I'd only need to use one single VOIP phone, not manage a whole bunch of them.
ProfTech:
Yes, the Obi 110 can do what you want if you can find one. They have been discontinued by Obihai and will not have any more firmware updates going forward. However if you need an FXO port they are one of the best devices out there, IMO. The current models 200/202 can use the USB adapter but there have been mixed reviews with it's use. Make sure you have the latest firmware in the 200 or 202 if you intend to try the adapter. My daughter uses a 200 but doesn't use the adapter. The newer devices definitely have more features and options.
GnatGoSplat:
I have since acquired a Grandstream GXV3275 IP phone and an Obi110 to try this out.
I followed the instructions here:
https://voxilla.com/2011/02/15/how-to-obify-your-ip-phone-no-asterisk-involved/
Managed to get Google voice incoming and outgoing calls working on the phone on line 2.
I'd like to associate PSTN with line 1 on the phone, but it appears as though it's necessary to dedicate one SIP profile per line on the IP phone. With Google Voice on SP1 and SP2 dedicated to line 2 on the IP phone, it doesn't seem like it would be possible to map PSTN to line 1 on the phone. I've read it's possible to set up an InboundCallRoute rule, but wouldn't that just send the landline to the same line as Google voice is routed to? I would like these to be 2 separate lines on the phone.
Is what I want to do not possible with the Obi110 alone?
drgeoff:
Unfortunately for you the OBi212 became available about one month after you were advised about the OBi110. The OBi212 is a newer replacement for the 110 but with some improvements including 4 rather than 2 SP slots.
One solution for the OBi110 would be to put GV directly on the Grandstream line 2. Sign up and pay the one-time fee of US$6 or whatever it is these days at simonics.com to use his GV-SIP gateway. You then have all the 110's resources for PSTN and Grandstream line 1. (You also get Caller ID NAME which you won't get with GV-OBi.)
Another method which might work with the 110 is:
a. Send incoming PSTN calls to the Grandstream line 1 using a Voice Gateway on the 110 rather than a SP slot.
b. Dial out from the Grandstream to PSTN by using line 2 on the Grandstream but using a prefix code to make the 110 use the LINE port instead of GV.
(Or do the "vice-versa" of a and b. 1 SP slot configured for GV. The other SP slot configured for Grandstream line 1. The Voice Gateway sending incoming GV to Grandstream line 2. The prefix for dialling GV calls from Grandstream line 1.)
azrobert:
Use SP2 for both Line 1 and Line 2. Route calls depending on userid.
Set the IP phone userid for Line 1 to "line1" and Line 2 to "line2".
OBi110
Voice Services -> SP2 Service -> X_InboundCallRoute:
{line1:li},{line2:sp1}
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