The BT guy should check LD 73 block LPTI and prompt AFF.
If it is crc then you need crc4 as well.
Best regards
Hans
Steve Totaro schrieb:
Andy Kirby wrote:
I am new to the group but have searched the doc's FAQ's etc before
posting here.
We are attempting tie our asterisk server/service to the building's
PBX, the building is in the UK and the local PBX is a meridian option
11 installed and mainteined by BT.
BT Have installed a NTBK50AA E1-PRI card in the meridian with daughter
cards NTBK51AA (D channel) and NTAK20BD (Clocking)
I have asked BT to configure the card as a Master (Exchange end) E1
Euro ISDN (Just like a standard ISDN30e)
They claim to have done this in line with the model they use to
interface to Cisco routers etc.
I have installed a Digium TE411P in our server looped back the span 2
port (Gives a green light and OK with same config as span 1) and am
using a crossover cable to link the PBX to our server. (We tried a
pucker BT cross over cable with exactly the same results as mine and a
striahgt through gives us nothing at all, I guess as you might expect)
I have configured the Zap span for 1 clocking (Primary) 1 line build
out, with the framing etc as CCS, HDB3, CRC4
But they don't appear to want to synchronise/talk to each other.
ZTTool claims that the span is up and down more times than a fiddlers
elbow and the clocking source is internal.
( Might I expect the alarm state to be constant if the framing etc
was matched and the clock source to show as external ??)
The alarms are cylcling from red to red/yellow and finaly to
red/yellow/recover before falling back to red and starting again.
I think I may be missing something that is probably blindingly
obvious to someone in the know.
The BT guy has been very good and is trying to help us get this going
but seems rather nonplussed with the terms CRC4, CSS and HDB3...
Please can somone help and point me (and I guess by extension the BT
guy) in the right direction.
Cheers
Andy
Try your end with every different combination of settings applicable to
EuroISDN. I would start by removing the CRC4. Try something, if it
doesnt work, put it back and change another setting.
s
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