[asterisk-users] Troubleshooting Random PRI disconnects

[Watkins, Bradley]

My first advice is to double and triple-check that your switchtype
settings match.  We had an issue that looked *exactly* the same from a
PRI debug standpoint and it turned out that while the carrier said we
were NI2, it was actually DMS100.
 
Regards,
- Brad

________________________________

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Shawn
Kelley
Sent: Wednesday, July 05, 2006 11:35 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Troubleshooting Random PRI disconnects



Hi all,

We are having an issue with Random Disconnects wit our PRI connection.

We are going into a T100P card from a Cisco IAD. 

Below is a copy of our PRI Debug. 

We will be talking on the phone and all the sudden the line will go
dead. It acts as if the remote party hungup. However, the remote party
is not hanging up.

Can anyone give me some hints on where to look for the cause of this?

 

 

 

    -- Zap/25-1 is ringing

> Protocol Discriminator: Q.931 (8)  len=9

> Call Ref: len= 2 (reference 44/0x2C) (Terminator)

> Message type: ALERTING (1)

> [1e 02 81 88]

> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)
0: 0   Location: Private network serving the local user (1)

>                               Ext: 1  Progress Description: Inband
information or appropriate pattern now available. (8) ]

    -- Zap/25-1 is ringing

    -- Zap/25-1 is ringing

    -- Zap/25-1 answered Zap/1-1

> Protocol Discriminator: Q.931 (8)  len=14

> Call Ref: len= 2 (reference 44/0x2C) (Terminator)

> Message type: CONNECT (7)

> [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 ]

> [1e 02 81 82]

> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)
0: 0   Location: Private network serving the local user (1)

>                               Ext: 1  Progress Description: Called
equipment is non-ISDN. (2) ]

< Protocol Discriminator: Q.931 (8)  len=5

< Call Ref: len= 2 (reference 44/0x2C) (Originator)

< Message type: CONNECT ACKNOWLEDGE (15)

< Protocol Discriminator: Q.931 (8)  len=9

< Call Ref: len= 2 (reference 44/0x2C) (Originator)

< Message type: DISCONNECT (69)

< [08 02 82 90]

< Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0
Location: Public network serving the local user (2)

<                  Ext: 1  Cause: Unknown (16), class = Normal Event (1)
]

-- Processing IE 8 (cs0, Cause)

    -- Channel 0/1, span 1 got hangup request

    -- Hungup 'Zap/25-1'

  == Spawn extension (from-mcleod-pri, 1693, 4) exited non-zero on
'Zap/1-1'

  == End MixMonitor Recording Zap/1-1

NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Disconnect Indication,
peerstate Disconnect Request

> Protocol Discriminator: Q.931 (8)  len=9

> Call Ref: len= 2 (reference 44/0x2C) (Terminator)

> Message type: RELEASE (77)

> [08 02 81 90]

> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0
Location: Private network serving the local user (1)

>                  Ext: 1  Cause: Unknown (16), class = Normal Event (1)
]

    -- Hungup 'Zap/1-1'

< Protocol Discriminator: Q.931 (8)  len=5

< Call Ref: len= 2 (reference 44/0x2C) (Originator)

< Message type: RELEASE COMPLETE (90)

NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null

NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null

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