OBi110 Disconnect detection in Spain (revisited)
derketo-rick:
I have searched existing posts but not found any definitive statement of a working configuration to detect disconnection in Spain.
The tone sequence (Physical Interfaces->Line Port->PSTN Disconnect Detection->DisconnectTonePattern) is approximately:
425-30;10;(.2+.2,.2+.2,.2+.6)
as suggested [here][http://www.obitalk.com/forum/index.php?topic=3510.0] - three short 200ms tones then long 600ms gap - which is apparently rather unusual in a global telco context.
There are hints that support may have something definitive and I have sent in a request for info but if anyone knows some magic tone setting or other setting which is known to work please post. There could also be some other hardware setting I have not seen mentioned at all.
If I get anything to work I will post back here as well.
Thanks
Rick
hwittenb:
In the ATA Administration Guide for their products, Cisco/Linksys says the disconnect tone for Spain is:
Spain—425@-10; 10(0.2/0.2/1,0.2/0.2/1,0.2/0.6/1)
which I imagine would translate to OBi as
425@-10;10;(0.2/0.2/1,0.2/0.2/1,0.2/0.6/1)
derketo-rick:
Thanks for that hwittenb.
From my reading of pp148-9 of the OBi Device Administration Guide (Version 26.08.12 – 26 August 2012) I think the Cisco pattern definition should translate to:
425-10;10;([1/]0.2+0.2,[1/]0.2+0.2,[1/]0.2+0.6)
where you can leave out the bits in square brackets as they indicate tone1 from the list of (one 425Hz) tone(s) at the beginning of the pattern definition.
To break that out, this is (if you remove line breaks added for clarity):
freq1-dB1[,foptional_req2-dB2][,optional_freq3-dB3];
secs_tot_duration;
secs_pattern_duration(
[optional_tone_number_defaulting_to_1/]t1_on_secs+t1_off_secs,
[optional_tone_number_defaulting_to_1/]t1_on_secs+t1_off_secs,
[optional_tone_number_defaulting_to_1/]t1_on_secs+t1_off_secs
)
@hwitttenb: Do you have a pattern definition break-out like this from the Cisco/Linksys manual so I could compare to make sure I am not missing something here ?
By observation we seem to have a pattern of three 0.2 second 425Hz pulses (signal level unclear - this may be the problem but I have tried several dB levels), separated by equal 0.2 second gaps, with this three-beep pattern repeated after a 0.6 second gap, giving a total pattern length of 1.6 seconds. This repeats 25 times before switching to a screechy three-rising-tones service disconnect pattern. I suppose I could look for that pattern instead but that means a delay of over a minute before detecting the disconnect, and the other pattern should be matchable as it is quite distinctive.
I was hoping for a definitive response from anyone who has made it work with an OBi110 in Spain - anyone out there ?
Thanks again
Rick
ianobi:
Rick,
I can't help you with the disconnect tone, but have you considered experimenting with "DetectCPC"? The OBi default "CPCTimeThreshold" is 450ms. This is way too high for some countries. For example for CPC to work here in the UK "CPCTimeThreshold" needs to be set at 90ms.
CPC is called different names in different countries. CPC stands for Called Party Control. When the called party hangs up, the local telco sends a short time of zero voltage back to the calling party. The OBi can detect this as a disconnection.
drgeoff:
Quote from: derketo-rick on March 10, 2014, 01:49:16 am
.... signal level unclear - this may be the problem but I have tried several dB levels ...
The level should not be critical. It can only be set by the telco at their switch (aka local exchange or local office). There will be an unknown amount of line loss (within limits) so the actual level at the customer cannot be accurately predicted.
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