OBi 110 - white list of callers via PSTN in Italy
drgeoff:
The LINE port of an OBi110 should look (electrically) just like a phone. A filter between that port and a DSL line is highly desirable.
A filter between the OBi's PHONE port and a phone is redundant (but won't have any ill effect).
antani1971:
@sailing: right now in my setup I have only the OBi and the DSL router attached to POTS and 1 phone attached to OBi phone port.
In this setup, if I put a DSL filter between the OBi and the phone outlet, then I can reproduce this caller ID detection problem. I was not able to reproduce by removing the filter between OBi and phone outlet, which anyway is (naturally) not an option.
Strange enough, the phone caller ID detection does never glitch so it looks an OBi specific problem. OBi support told me to look at LINE port impedance, but it is set correctly to my knowledge. Also tried different RX gain settings (+5, 0, -15 dB) without any effect.
Next step will be to replace DSL filter with a (hopefully) higher quality DSL splitter from a brand that solved similar problems on Fritz boxes. Just ordered one.
antani1971:
Hi *,
problem seems now resolved.
I have increased the RingIndicationDelayTime from 0 to 1000. I have no clue why the problem was not reproduceable without DSL filter, but so far so good with the DSL filter fit in place. First I tried going to 256 ms without results, then tried a massive increment up to 1000 and working fine up to now.
I have increased of the same amount (+1000) the RingDelay going from 2750 to 3750. I do not know if this is required or it simply enough that RingDelay >= RingValidationTime + RingIndicationDelayTime + RingTimeout (=2160 ms.); I will probably give it a try later in order to minimize the RingDelay, right now I will let it stable with current parameters and check everything is fine in a longer run.
Thanks everybody
antani1971:
seemed resolved... it is not :-(
not working stable, despite I was able to let incoming call from white list ring phone 22 times in a row without a single fault. Started working unreliably again.
I think now I will wait for Obihai support.
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