Re: [asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread jg 
I don't see where your problem is. Can you get a pcap trace of the 
D-channel? There's not that much, so you could run it overnight.


You should see the RR frames, maybe a few of SABMEs. I am wondering 
whether the RR frames will stop at some point. When things need to 
reinitialize you should see a SABME frame before a SETUP request.


jg

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Re: [asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread Olivier 
Googling, I found this one-year old  thread about the same subject
http://thr3ads.net/asterisk-users/2012/06/1950384-Asterisk-10-1.6.1-and-Dahdi-Libpri-compatilities-in-BRI-PtmP

If my reading and understanding is correct:
1. Briging layer 1 down is specific to PtmP (PtP is not concerned).
2. When a line is down, pri show spans shows it as such, and the one way to
check this line can be up is to it an outgoing (easy) or incoming (harder)
call.

A workaround is to use layer2_persistence=keep_up which can be forbidden by
Telco, as it will keep the line from entering energy saving mode.

An other way to deal with this is to completely forget pri show spans in
PtmP installation, forget about beautiful RRDTools graphs and learn to
supervise systems with log output ("no failure when trying to output a call
= no problem").

Thoughts ?




2013/6/6 Olivier 

>
>
>
> 2013/6/6 jg 
>
>>  On 06/06/2013 05:55 PM, Olivier wrote:
>>>
 Hi,

 I need to rebuild a system which has 4 BRI ports and is connected to
 Point-to-multiPoint lines, in a country where telco often "drop lines
 for energy savings".

>>>
>>> I think the dropped D-channel issue should be handled by a very recent
>>> DAHDI. If there are still issues file a bug. Don't know about PtMP.
>>>
>>
> I think but I'm far from being certain that PtmP lines are the one
> concerned by  Telco energy savings.
> If someone could shed some light on this, that would be perfect.
>
>
>
>>  I am using ISDN BRI connections for several years now. I have never
>> seen a problem with down states of the D channel. If there is nothing
>> hooked up to the S bus it is very likely that the D channel will be down
>> after a while. When you start the low level driver, the line might still be
>> down. But when you start Asterisk and DAHDI tries to negotiate a TEI value,
>> then the line will connect. So far I have never seen a disconnected state
>> on a BRI-P2MP line while Asterisk is running. To be precise, I always
>> observed periodic RR frames (typically every 10 seconds) when Asterisk is
>> running for apparently idle lines. I have all the docs, but I wasn't
>> motivate enough so far to read them
>
>
> My case is worse : I didn't even try to get the docs ;-)
>
>
>> and learn whether disconnected states are possible with active devices.
>>
>>  I'm planning to use latest 11.4.0 asterisk version along with dahdi and
 libpri (no misdn).

 Which version are recommended for Dahdi and Libpri ?

>>>
>>> Probably the very latest you can find. If the latest stable does not
>>> work for you then try an RC of an upcoming version or get master from git.
>>>
>> As I said, any recent version should be fine.
>>
>>
>>>  My main requirements are, beside having calls coming in and out:
 - keep a meaningful "pri show spans" status (pri show spans outputs Down
 when the line is down (cable unplugged, no q921 traffic, ...))
 - avoid sporadic ERROR messages in logs.

>>> Did you have any problems with the line status?
>>
>
> Not exactly but I was thinking about tweaks such as *layer1_presence*=ignore
> or layer2_persistence=keep_up.
> I wonder if the later one, didn't mask current line status.
>
>>
>> jg
>>
>>
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>
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Re: [asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread Olivier 
2013/6/6 jg 

> On 06/06/2013 05:55 PM, Olivier wrote:
>>
>>> Hi,
>>>
>>> I need to rebuild a system which has 4 BRI ports and is connected to
>>> Point-to-multiPoint lines, in a country where telco often "drop lines
>>> for energy savings".
>>>
>>
>> I think the dropped D-channel issue should be handled by a very recent
>> DAHDI. If there are still issues file a bug. Don't know about PtMP.
>>
>
I think but I'm far from being certain that PtmP lines are the one
concerned by  Telco energy savings.
If someone could shed some light on this, that would be perfect.



>  I am using ISDN BRI connections for several years now. I have never seen
> a problem with down states of the D channel. If there is nothing hooked up
> to the S bus it is very likely that the D channel will be down after a
> while. When you start the low level driver, the line might still be down.
> But when you start Asterisk and DAHDI tries to negotiate a TEI value, then
> the line will connect. So far I have never seen a disconnected state on a
> BRI-P2MP line while Asterisk is running. To be precise, I always observed
> periodic RR frames (typically every 10 seconds) when Asterisk is running
> for apparently idle lines. I have all the docs, but I wasn't motivate
> enough so far to read them


My case is worse : I didn't even try to get the docs ;-)


> and learn whether disconnected states are possible with active devices.
>
>  I'm planning to use latest 11.4.0 asterisk version along with dahdi and
>>> libpri (no misdn).
>>>
>>> Which version are recommended for Dahdi and Libpri ?
>>>
>>
>> Probably the very latest you can find. If the latest stable does not work
>> for you then try an RC of an upcoming version or get master from git.
>>
> As I said, any recent version should be fine.
>
>
>>  My main requirements are, beside having calls coming in and out:
>>> - keep a meaningful "pri show spans" status (pri show spans outputs Down
>>> when the line is down (cable unplugged, no q921 traffic, ...))
>>> - avoid sporadic ERROR messages in logs.
>>>
>> Did you have any problems with the line status?
>

Not exactly but I was thinking about tweaks such as *layer1_presence*=ignore
or layer2_persistence=keep_up.
I wonder if the later one, didn't mask current line status.

>
> jg
>
>
> --
> __**__**_
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>   http://www.asterisk.org/hello
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> To UNSUBSCRIBE or update options visit:
>   
> http://lists.digium.com/**mailman/listinfo/asterisk-**users
>
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Re: [asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread jg 

On 06/06/2013 05:55 PM, Olivier wrote:

Hi,

I need to rebuild a system which has 4 BRI ports and is connected to
Point-to-multiPoint lines, in a country where telco often "drop lines
for energy savings".


I think the dropped D-channel issue should be handled by a very recent 
DAHDI. If there are still issues file a bug. Don't know about PtMP.
I am using ISDN BRI connections for several years now. I have never seen 
a problem with down states of the D channel. If there is nothing hooked 
up to the S bus it is very likely that the D channel will be down after 
a while. When you start the low level driver, the line might still be 
down. But when you start Asterisk and DAHDI tries to negotiate a TEI 
value, then the line will connect. So far I have never seen a 
disconnected state on a BRI-P2MP line while Asterisk is running. To be 
precise, I always observed periodic RR frames (typically every 10 
seconds) when Asterisk is running for apparently idle lines. I have all 
the docs, but I wasn't motivate enough so far to read them and learn 
whether disconnected states are possible with active devices.

I'm planning to use latest 11.4.0 asterisk version along with dahdi and
libpri (no misdn).

Which version are recommended for Dahdi and Libpri ?


Probably the very latest you can find. If the latest stable does not 
work for you then try an RC of an upcoming version or get master from 
git.

As I said, any recent version should be fine.



My main requirements are, beside having calls coming in and out:
- keep a meaningful "pri show spans" status (pri show spans outputs Down
when the line is down (cable unplugged, no q921 traffic, ...))
- avoid sporadic ERROR messages in logs.

Did you have any problems with the line status?

jg

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Re: [asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread Patrick Lists 

On 06/06/2013 05:55 PM, Olivier wrote:

Hi,

I need to rebuild a system which has 4 BRI ports and is connected to
Point-to-multiPoint lines, in a country where telco often "drop lines
for energy savings".


I think the dropped D-channel issue should be handled by a very recent 
DAHDI. If there are still issues file a bug. Don't know about PtMP.



I'm planning to use latest 11.4.0 asterisk version along with dahdi and
libpri (no misdn).

Which version are recommended for Dahdi and Libpri ?


Probably the very latest you can find. If the latest stable does not 
work for you then try an RC of an upcoming version or get master from git.



My main requirements are, beside having calls coming in and out:
- keep a meaningful "pri show spans" status (pri show spans outputs Down
when the line is down (cable unplugged, no q921 traffic, ...))
- avoid sporadic ERROR messages in logs.


Guess you have to test.

Regards,
Patrick

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[asterisk-users] Which dahdi/libpri combo for BRI/PtmP ?

2013-06-06 Thread Olivier 
Hi,

I need to rebuild a system which has 4 BRI ports and is connected to
Point-to-multiPoint lines, in a country where telco often "drop lines for
energy savings".

I'm planning to use latest 11.4.0 asterisk version along with dahdi and
libpri (no misdn).

Which version are recommended for Dahdi and Libpri ?

My main requirements are, beside having calls coming in and out:
- keep a meaningful "pri show spans" status (pri show spans outputs Down
when the line is down (cable unplugged, no q921 traffic, ...))
- avoid sporadic ERROR messages in logs.

Regards
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