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× Questions about B100/200/400/800 ISDN BRI Cards

B800P and splitter SP124

8 years 4 months ago #7037 by mjunghanns
Hi there. I am currently about to setup an Elastix based PBX with a B800P controller.

This device has four physical ports. Along with the card, four splitters (SP124) were bundled. I suppose that the purpose of these splitters is to "duplicate" (more or less) each port, so that all of the 8 available spans/channels are accessible.

First I didn't use the splitters for some rough testing. When I connected port 1 to the NT, span 1 would go to OK. Then I tried to use the splitters. I plugged the splitter into port 1 (which should now make span 1 and span 8 accessible). After connecting one port of the splitter to the NT, I tried to do "dahdi show status" within asterisk CLI. This would now show me the following:
pbx*CLI> dahdi show status
Description Alarms IRQ bpviol CRC4 Fra Codi Options LBO
B4XXP (PCI) Card 0 Span 1 YEL 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 2 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 3 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 4 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 5 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 6 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 7 RED 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 8 YEL 0 0 0 CCS AMI 0 db (CSU)/0-133 feet (DSX-1)

Why on earth is port 1 and 8 on Yellow Alarm? I tried to manipulate termination jumpering of the affected ports, but that did not heal the problem either. Could anyone give me an advice on this, please?

Many greetings from Germany,

Mark



i] Last edited by mjunghanns at 2011-7-4 04:35 [/i
8 years 4 months ago #7038 by Joe.Yung
Hi,

If you would like to use port 1 as NT mode, firstly you need to patch file chan_dahdi.c. Right here , it's the patch.

Then, you can manually set the port 1 to NT mode by parameter `te_nt_override=0xFE. Please see here for more.

Once you patch base.c, you can perform command ` modprobe wcb4xxp te_nt_override=0xFE` to set the port 1 to NT.

8 years 4 months ago #7045 by mjunghanns
Hi Joe,
thanks for the quick reply.
I'm afraid I wasn't clear in my first post. I do not want to use any port in NT mode, thus I intend to use it in TE mode.
The NT I mentioned is my NTBA from the public phone network.

Regards
Mark
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