Weak Ring Current on Obi302
n4mwd:
I have the Obi302 configured and working mostly like I want. However, when an incoming call is received, I get one short ring burst, then after about 6 seconds, another short ring burst. If I start unplugging phones, the ring is normal.
The 302 is replacing a grandstream 502 that had no problem with the number of phones I have. The gs is rated for 3 REN and the obi is 5 REN. So the obi should be better not worse.
So I'm thinking either this 302 is bad or there is a configuration issue.
Does anybody know if there is a setting somewhere to boost the ring current?
SteveInWA:
You can try increasing the ring voltage (not current) by going into OBiTALK's expert settings section, and try increasing it, say, 5V at a time. The maximum voltage the module will produce is 82V.
See my screenshot attached. More likely, one of your telephones is bad. Are these ancient Western Electric 2500 or other similar phones with electro-mechanical bells, or more modern phones with electronic ringers? The right way to troubleshoot this would be to unplug one phone at a time, and see if it cures the problem. If not, plug that phone back in, and unplug another phone, retest, lather, rinse, repeat, until you find the dud.
n4mwd:
Thanks for the reply. I increased the ring voltage to 80. It seemed to help a little, but one phone, which is the farthest away (~200ft) cannot seem to make it. It was a bell 500, but I replaced it with a trimfone with an electronic ringer, but it still doesn't work. No problems dialing out. Maybe something to do with the length. Several of the closer phones are the mechanical bells.
What I don't understand is why the old grandstream rings all the phones mechanical or not. Never a complaint. However, in all fairness, the grandstream failed on that same line by having excessive white noise for some stupid reason - which is why I bought the OBI.
Should I play with the current and see if that helps?
SteveInWA:
Comparing the OBi device to a Grandstream device isn't relevant, since they use different electronics.
You are probably in the 0.001% of the user population who is trying to power a bunch of ancient electro-mechanical bells with an OBi. You simply found the limit of how much power can be pumped through your home's telephone wires over a long distance, with multiple inductive loads on the wires.
There's nothing else you can do, other than to go back to using the Grandstream, or re-wire your house, or stop using so many antique phones.
azrobert:
You could try connecting one or more phones to the Grandstream then route calls to/from the OBi302. Most homes are wired for 2 lines, so you could use the 2nd line to connect the phone(s) to the GS. You might need a 2 line splitter.
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