[*] fractional PRI - no d-channels available?

[Theodore Baschak]

Hi All:

# cat /etc/zaptel.conf
span = 1,1,0,esf,b8zs
bchan = 1-16
dchan = 24
loadzone = us
defaultzone = us

# cat /etc/asterisk/zapata.conf
[trunkgroups]

[channels]

switchtype=ni1
context=default
signalling=pri_cpe
group=1
channel => 1-16

# cat /proc/zaptel/1
Span 1: TE2/0/1 "T2XXP (PCI) Card 0 Span 1" (MASTER) B8ZS/ESF ClockSource

            1 TE2/0/1/1 Clear (In use)
            2 TE2/0/1/2 Clear (In use)
            3 TE2/0/1/3 Clear (In use)
            4 TE2/0/1/4 Clear (In use)
            5 TE2/0/1/5 Clear (In use)
            6 TE2/0/1/6 Clear (In use)
            7 TE2/0/1/7 Clear (In use)
            8 TE2/0/1/8 Clear (In use)
            9 TE2/0/1/9 Clear (In use)
           10 TE2/0/1/10 Clear (In use)
           11 TE2/0/1/11 Clear (In use)
           12 TE2/0/1/12 Clear (In use)
           13 TE2/0/1/13 Clear (In use)
           14 TE2/0/1/14 Clear (In use)
           15 TE2/0/1/15 Clear (In use)
           16 TE2/0/1/16 Clear (In use)
           17 TE2/0/1/17
           18 TE2/0/1/18
           19 TE2/0/1/19
           20 TE2/0/1/20
           21 TE2/0/1/21
           22 TE2/0/1/22
           23 TE2/0/1/23
           24 TE2/0/1/24 HDLCFCS (In use)

DualPRI*CLI> pri show span 1
Primary D-channel: 24
Status: Provisioned, Up, Active
Switchtype: National ISDN 1
Type: CPE
Window Length: 0/7
Sentrej: 0
SolicitFbit: 0
Retrans: 0
Busy: 0
Overlap Dial: 0
T200 Timer: 1000
T203 Timer: 10000
T305 Timer: 30000
T308 Timer: 4000
T309 Timer: -1
T313 Timer: 4000
N200 Counter: 3

DualPRI*CLI> pri show spans
PRI span 1/0: Provisioned, Up, Active

I just got off the phone with Shaw, and I've got the National ISDN 1 
thingy in there now at their suggestion, however now I'm seeing the 
following:

[Jun 12 15:06:29] WARNING[2934]: chan_zap.c:9294 pri_dchannel: PRI Error 
on span 0: We think we're the CPE, but they think they're the CPE too.

[Jun 12 15:06:30] WARNING[2934]: chan_zap.c:9294 pri_dchannel: PRI Error 
on span 0: We think we're the CPE, but they think they're the CPE too.

[Jun 12 15:06:31] WARNING[2934]: chan_zap.c:9294 pri_dchannel: PRI Error 
on span 0: We think we're the CPE, but they think they're the CPE too.

[Jun 12 15:06:32] WARNING[2934]: chan_zap.c:9294 pri_dchannel: PRI Error 
on span 0: We think we're the CPE, but they think they're the CPE too.

Apparently my CSU might be looped, I'm about to call the NOC and have 
them check for loops.

The light on the back of the card IS green though.

Theo


Jim Van Meggelen wrote:
> First things first. Have you got a T1 circuit? (I don't mean the physical
> circuit, I mean that the T1 circuit is up and running; no alarms). I've
> spent time troubleshooting PRI, when the real problem was that the T1 wasn't
> up. The carrier guy didn't think to check it either (turned out to be a
> polarity problem on the cable between the demarc and the card). You can have
> a T1 without PRI, but you can't have PRI without a T1.
> 
> The configuration for a PRI is pretty simple in Asterisk, so if you have
> that config right, it may be that the carrier hasn't turned it up yet.
> 
> Post your /etc/zaptel.conf and your /etc/asterisk/zapata.conf files here so
> everyone can have a look at them.
> 
> Generally the carrier will put the D on channel 24, so I wouldn't be
> inclined to think that's the problem, but who knows?
> 
> Anyhow, my advice is to be 110% sure that T1 is green before worrying about
> the PRI, then verify the D-chan is on 24.
> 
> Jim
> 
> --
> Jim Van Meggelen
> jim at vanmeggelen.ca
> http://www.oreillynet.com/pub/au/2177
> 
> "A child is the ultimate startup, and I have three. 
> This makes me rich."
>                     Guy Kawasaki
> --
> 
> 
> 
> asterisk-bounces at muug.mb.ca wrote:
>> Hi Guys:
>>
>> I've got a 16 channel (fractional) PRI at work here, and I'm
>> just in the process of getting it going with asterisk. I'm
>> having a problem with it not being able to find a d-channel though.
>>
>> Error message (once per second on the console) is
>> chan_zap.c2401 pri_find_dchan: No D-Channels available! Using
>> Primary channel 24 as D-Channel anyway!
>>
>> I'm just waiting for a call back from the provider to see
>> which one I should be using, however as I've never dealt with
>> a PRI before I'm kind of lost. (and I may get more lost if
>> they start talking about PRIs in any depth)
>>
>> Theo
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> 
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