[asterisk-users] Problems with E400P Cards

[Tzafrir Cohen]

On Fri, Apr 04, 2008 at 11:52:33AM +0200, Bernhard Wessels wrote:
> Hi All,
> 
> i´ve dealed around with two E400P Cards the last 3 Days and I cant 
> figure out why this problem exists.
> 
> Here the description:
> 
> I have two E400P Quad E1 Cards. One is in NT Mode and the other is in 
> TE(CPE) Mode.
> When I connect both cards via E1-Cross Cabel the cards wont sync. I see 
> in zttool Red Alarm and SyncSource:Internally Clocked.
> I see Bipolar Voilations Counting up.
> Now comes the tricky part.
> I have a third Card. A Rhino R4T1 in E1 Mode(TE). When i plugg my 
> crosscable from E400P to Rhina. Pling Sync is perfect.
> zttool says : no alarms, SyncSource : Tormenta PCI...... Everything is fine.
> 
> What the hell (sorry) is the problem?!? Dont know why both E400P Cards 
> wont sync. But they sync if i plug it into a rhino port.?!?!
> Anybody has some idea?!?!
> 
> Here is my zaptel.conf of the E400P in NT Mode:
> 
> span=1,0,4,ccs,hdb3,crc4
> span=2,0,4,ccs,hdb3,crc4
> span=3,0,4,ccs,hdb3,crc4
> span=4,0,4,ccs,hdb3,crc4

Just my guess:

None of the spans (ports) is configured to provide clock to the other
side. 

If you want to cross-connect port 1 and port 2, you should use something
like:

span=1,1,4,ccs,hdb3,crc4
span=2,0,4,ccs,hdb3,crc4

(And run ztcfg after that)

-- 
               Tzafrir Cohen
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