[asterisk-users] PRI dropping

[Harry Vangberg]

It was just B channels resetting. Yesterday I had them dropping, and
thus I just hurried sending a message today, without noticing that
they were just resetting.

2009/3/24 Brandon B. <brandon at brellsystems.com>:
> Is your PRI dropping calls, or are the unused B channels resetting? What is
> your resetinterval in the /etc/asterisk/zapata.conf?
>
>
>
> On Tue, Mar 24, 2009 at 3:21 PM, Harry Vangberg <harry at vangberg.name> wrote:
>>
>> Hello,
>>
>> I have an ISDN-30 connection and a Digium TE-121 with VPMADT032 echo
>> cancellation. Every 30-60 minutes I experience PRI dropping.
>>
>> @@@ /etc/zaptel.conf:
>> loadzone=dk
>> defaultzone=dk
>>
>> span=2,1,0,ccs,hdb3,crc4
>> bchan=32-46
>> dchan=47
>> bchan=48-62
>> @@@
>>
>> @@@ /etc/asterisk/zapata.conf
>> [channels]
>> switchtype=euroisdn
>> usecallerid=yes
>>
>> group=2
>> signalling=pri_cpe
>> context=incoming
>> channel => 32-46
>> channel => 48-62
>> @@@
>>
>> With PRI debug turned out I get this output:
>>
>> @@@
>> q931.c:2755 q931_restart: call 32768 on channel 1 enters state 62
>> (Restart)
>> > Protocol Discriminator: Q.931 (8)  len=13
>> > Call Ref: len= 2 (reference 0/0x0) (Originator)
>> > Message type: RESTART (70)
>> > [18 03 a9 83 81]
>> > Channel ID (len= 5) [ Ext: 1  IntID: Implicit  PRI  Spare: 0  Exclusive
>> >  Dchan: 0
>> >                        ChanSel: Reserved
>> >                       Ext: 1  Coding: 0  Number Specified  Channel Type:
>> > 3
>> >                       Ext: 1  Channel: 1 ]
>> > [79 01 80]
>> > Restart Indentifier (len= 3) [ Ext: 1  Spare: 0  Resetting Indicated
>> > Channel (0) ]
>> < Protocol Discriminator: Q.931 (8)  len=13
>> < Call Ref: len= 2 (reference 0/0x0) (Terminator)
>> < Message type: RESTART ACKNOWLEDGE (78)
>> < [18 03 a1 83 81]
>> < Channel ID (len= 5) [ Ext: 1  IntID: Implicit  PRI  Spare: 0
>> Preferred  Dchan: 0
>> <                        ChanSel: Reserved
>> <                       Ext: 1  Coding: 0  Number Specified  Channel Type:
>> 3
>> <                       Ext: 1  Channel: 1 ]
>> < [79 01 80]
>> < Restart Indentifier (len= 3) [ Ext: 1  Spare: 0  Resetting Indicated
>> Channel (0) ]
>> -- Processing IE 24 (cs0, Channel Identification)
>> -- Processing IE 121 (cs0, Restart Indicator)
>> q931.c:3581 q931_receive: call 32768 on channel 1 enters state 0 (Null)
>>    -- B-channel 0/1 successfully restarted on span 2
>> @@@
>>
>> For each and every channel (see full output at http://sprunge.us/fUEd )
>>
>> I have had two technicians from my telco out here and measuring.
>> Everything is fine with the connection.
>>
>> Best regards,
>>
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>
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