[Asterisk-Users] E1 config help and guidance
tim panton
tpanton at attglobal.net
Mon Jul 12 08:38:14 MST 2004
See inline comments...
asterisk wrote:
> Darren,
>
> Many thanks for your help - I've got further, but am still stumped. Have a
> look at the following table:
>
> LED | ISDN | Asterisk
> ------+-----------+---------
> OOS | Out | Red
> ACT | Green | Green
> RED | Out | Red
> YEL | Out | Out
> LBK | Out | Out
> CC | Out | Out
> DCH | Green | Green
>
> The LED indicators are as follows:
>
> OOS: Out of Service
> ACT: Active State
> RED: Red alarm state detected (Could be Loss of carrier, loss of frame or
> loss of crc multiframe
> YEL: Yellow alarm state detected (remote alarm indication from remote end)
> LBK: Loopback mode
> CC: Clock controller not equipped
> DCH: DCH is established.
>
> What this table indicates is that if I plug the 2MB pri card from the nortel
> into the EuroISDN bearer box, the leds light up as shown in the ISDN column.
> If I plug the nortel card into the asterisk box, then the leds light up as
> shown in the Asterisk column.
>
> I would have expected the leds to light up in the same manner - am I missing
> something ? Apart from asterisk experience :)
Couple of things to look at:
1) Darren's config assumes you have plugged the _whole_ thing
together ie PSTN->*->nortel ie 2 e1 connections - your table above
implies that you are doing one then the other. This won't work
because the config tells * to get the timing source from the PSTN.
2) I've _never_ had any luck using crc4, I always turn it off
and only put it back if someone complains.
3) If you have been struggling for a while you may have
strayed onto the telco's 'badboy list'. I have one installation
where I misconfigured it once and they marked the interface as
'down' at the exchange. Nothing worked untill I rang them, whereupon
they marked it as 'up' and things started working (once I'd fixed the
config).
Tim.
>
> Julian
>
>
>
> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com
> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of Storer, Darren
> Sent: 09 July 2004 21:06
> To: asterisk-users at lists.digium.com
> Subject: RE: [Asterisk-Users] E1 config help and guidance
>
> Hi Julian,
>
> J> I want to put asterisk in the middle of our current pbx (Meridian
> J> Option11)
>
> Something like this?:
>
> ---------------------
> | |
> PSTN <---span1--| CPE Asterisk NET |--span2---> Nortel
> | |
> | |
> ---------------------
>
>
> Assuming that you connect your incoming Telco PRI (PSTN) to span1 and the
> Nortel PBX to span2 (as depicted above) the lines below should help:
>
> Extract from zaptel.conf
> ========================
>
> span=1,1,0,ccs,hdb3,crc4
> bchan=1-15,17-31
> dchan=16
> span=2,0,0,ccs,hdb3,crc4
> bchan=32-46,48-62
> dchan=47
>
> Extract from zapata.conf
> ========================
>
> pridialplan=local
> switchtype = euroisdn
> signalling = pri_cpe
>
> group = 1
> channel => 1-10
> switchtype = euroisdn
> signalling = pri_cpe
>
> group = 2
> channel => 32-41
> switchtype = euroisdn
> signalling = pri_net
>
> In the config lines above, span1 is set to take timing from the PSTN whilst
> span2 is configured to "give" timing to the Nortel. Span1 will behave like a
> piece of CPE (PBX) and span2 will behave like the NETwork.
> NB. The channels in group 1 and 2 are depleted as you only have 10 channels
> enabled on your PRI.
>
> After you have implemented the changes above (or any subsequent changes to
> the low level PRI config) you should, at the very least, remember to restart
> the Asterisk system or, as Critch advises, power down and up again.
>
> HTH
>
> Darren
> --
> Comgate
> Telco>Internet<Broadcast
>
> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com
> [mailto:asterisk-users-admin at lists.digium.com]On Behalf Of asterisk
> Sent: 09 July 2004 19:00
> To: asterisk-users at lists.digium.com
> Subject: [Asterisk-Users] E1 config help and guidance
>
>
> I've googled / voip-info'd / searched until my eyes are blurry, but couldn't
> see the info I was looking for. I've turned here for help!
>
> Asterisk CVS head (9/7/04)
> Fedora Core 2 (updated to 2.6.6 kernel)
> DE405P (jumpers set to E1)
>
> I want to put asterisk in the middle of our current pbx (Meridian Option11)
>
> Currently the meridian has a 2MB pri EuroISDN card linked via a rj-45 into a
> euroISDN bearer. This bearer only has 10 channels activated (out of the 30).
> Obviously, this works - handsets make external calls.
>
> What I wanted to do was to add * to the mix, in the middle so that it can
> intercept inbound / outbound calls and do what it needs to do, as well as
> providing all the extra functionality that this wonderful product provides.
>
> In order to achieve this, I assumed that I needed to take rj45 from the
> bearer box and plug that into span 2, and take a cable from span 1 into the
> bearer box.
>
> My problem (and blurry eyes) come from not understanding the various
> protocols to assign to each span. I want the meridian to think that it's
> still plugged into the EuroISDN bearer. So span 2 should be set up as a
> EuroISDN link ? What should span 1 be set up as ? What channels should be
> configured ?
>
> Any guidance (I'm not looking for the solution (would be nice!) but for
> pointers in the right direction).
>
> I have previously been able to set up asterisk using the x100p and graduated
> to BRI isdn. I just got the 405 today and wanted to play!
>
> Thanks in advance.
>
> Julian.
>
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