Obi202 Dial Plan / Digit Map UK configuration
kknb0800:
My understanding of the routing was completely wrong. Thanks for explaining it...things have all of a sudden become much clearer :)
I plan to use the obi box just for outgoing calls so that I can take advantage of the much better rates. I have BT broadband so I have to have a fixed PSTN line anyway. I looked at Sipgate but their rates are just too expensive for what I want. Although they do provide a number, I'd be better off just dialing an access code from my BT line which is a shame as they could have been a good option.
I am actually considering purchasing an "OBiLINE - FXO to USB Phone Line Adapter" so that I can use both through obi. If I did, I'd still keep SP1 as primary line as that's the one I use the most and simply have the pstn line for incoming and emergency 999/112 calls. I guess this would be a separate discussion if I was to go down this route.
So, back to the matter at hand; I tried calling Greek and Cyprus mobiles and that works a treat - everything routed correctly. Even the wife was impressed which is no mean feat in iteself! As for the Greek and Cyprus landlines, I haven't tried these yet but I'm sure there won't be any issues. However, I (think I) can see what the issue is. In this case, would the impact simply be on the time it takes to match the dialed number or am I looking at a bigger problem?
ianobi:
It may be academic now, but you might have been ok with an OBi110. It only has two spX, but has PSTN capability built in and eight Voice Gateways that can be used for outgoing calls only. The OBi202 also has the Voice Gateways if you need them.
The point about the Greek and Cypriot numbers is that I think that they can both start with a "2". I'm guessing somewhat here, you know more than me on this subject! Anyhow Greek numbers are 10 digits and Cyprus numbers are 8 digits. The problem now is what happens if someone dials a Greek number slowly. After 8 digits the OBi will think it's got a match for a Cyprus number and will send those 8 digits as a number out on sp2. Looking at my proposed ITSP Profile A DigitMap there is this rule:
<:00357[1-8]xxxxxxxS4
Oops, I've just noticed I missed a ">". The rule should be:
<:00357>[1-8]xxxxxxxS4
I'll correct the original post in case someone copies it. So this rules says an eight digit number starting with 1 to 8 will have 00357 prepended to it. The S4 means that after the eighth digit the OBi processor will wait for 4 seconds before accepting the eight digits as a complete number. If someone is dialling a Greek number, as soon as the ninth digit is dialled the OBi processor will ignore the above rule and after the tenth digit is dialled it will match the Greek number format. So the only impact is the addition of a four second delay when calling a Cyprus landline.
The S4 is unnecessary if you are dialling with say a DECT phone where you put the whole number in then press the "go" button. However with a conventional corded phone you may pause after eight digits to look up the rest of the Greek number and find yourself calling Cyprus instead!
kknb0800:
When I first bought the obi202, I knew nothing about any of this stuff. The reason I went for the obi202 is that I read that it supports up to 4 voip accounts whereas the obi110 only supports 2 and thought that's what I needed. I had no idea about voice gateways and still didn't until you mentioned it. All things considered the obi110 would have been a better solution for me. Rather than ordering the OBiLINE adapter, it's only and extra £15 to get the obi110 and I'll find another use for the obi202 i.e. send it to another family member abroad.
I played around with voice gateways last night and managed to get everything working through them rather than through the ITSP profiles. If anyone wants, I can post my config up. I did this just in case I did move to the 110.
Thanks again ianobi for all your help! I wouldn't have got this far without it.
drgeoff:
There are a few gotchas with Voice Gateways. They don't register with the ITSP which obviously means no incoming calls and, possibly more crucial, can only be used with ITSPs which allow calling without registration. Some do, some don't.
That said, Voice Gateways are indeed useful.
kknb0800:
At the moment I'm using Betamax providers and so far so good but the 202 may prove to be more future proof in case my requirements change. Something to consider I guess... ???
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