PRI hangup randomly

Dear Group,

I am having some problem with PRI, my calls randomly get disconnected and after I am running Debug, I got the out from CLi screen…

Cli messages,

– Executing Dial(“Zap/31-1”, “zap/g1/100||rTt”) in new stack

– Making new call for cr 32809

-- Requested transfer capability: 0x10 - 3K1AUDIO

Protocol Discriminator: Q.931 (8) len=30

Call Ref: len= 2 (reference 41/0x29) (Originator)

Message type: SETUP (5)

[04 03 90 90 a3]

Bearer Capability (len= 5) [ Ext: 1 Q.931 Std: 0 Info transfer capability: 3.1kHz audio (16)

                         Ext: 1  Trans mode/rate: 64kbps, circuit-mode (16)
                         Ext: 1  User information layer 1: A-Law (35)

[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 ]

[1e 02 80 83]

Progress Indicator (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) 0: 0 Location: User (0)

                          Ext: 1  Progress Description: Calling equipment is non-ISDN. (3) ]

[6c 03 21 81 20]

Calling Number (len= 5) [ Ext: 0 TON: National Number (2) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)

                      Presentation: Presentation permitted, user number passed network screening (1) ' ' ]

[70 04 c1 31 30 30]

Called Number (len= 6) [ Ext: 1 TON: Subscriber Number (4) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1) ‘100’ ]

-- Called g1/100

< Protocol Discriminator: Q.931 (8) len=10

< Call Ref: len= 2 (reference 41/0x29) (Terminator)

< Message type: CALL PROCEEDING (2)

< [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 ]

– Processing IE 24 (cs0, Channel Identification)

-- Zap/1-1 is proceeding passing it to Zap/31-1

< Protocol Discriminator: Q.931 (8) len=12

< Call Ref: len= 2 (reference 41/0x29) (Terminator)

< Message type: STATUS (125)

< [08 02 81 e4]

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

< Ext: 1 Cause: Unknown (100), class = Protocol Error (6) ]

< [14 01 09]

< Call State (len= 3) [ Ext: 0 Coding: CCITT (ITU) standard (0) Call state: Incoming Call Proceeding (9)

– Processing IE 8 (cs0, Cause)

– Processing IE 20 (cs0, Call State)

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

< Call Ref: len= 2 (reference 41/0x29) (Terminator)

< Message type: ALERTING (1)

-- Zap/1-1 is ringing

< Protocol Discriminator: Q.931 (8) len=12

< Call Ref: len= 2 (reference 41/0x29) (Terminator)

< Message type: CONNECT (7)

< [4c 05 01 80 31 30 30]

< Connected Number (len= 7) [ Ext: 0 TON: Unknown Number Type (0) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)

< Ext: 1 Presentation: Presentation permitted, user number not screened (0) ‘100’ ]

– Processing IE 76 (cs0, Connected Number)

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

Call Ref: len= 2 (reference 41/0x29) (Originator)

Message type: CONNECT ACKNOWLEDGE (15)

-- Zap/1-1 answered Zap/31-1

-- Attempting native bridge of Zap/31-1 and Zap/1-1 ?-------------------?Extension 100 pickup the call, and get disconnected?

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

< Call Ref: len= 2 (reference 41/0x29) (Terminator)

< Message type: DISCONNECT (69)

< [08 02 85 90]

< Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) 0: 0 Location: Private network serving the remote user (5)

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

– Processing IE 8 (cs0, Cause)

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

/?. Zapata.conf file

[channels]

context=from-alcatel

switchtype=national

overlapdial=yes

signalling=pri_net

pridialplan=local

resetinterval=never

facilityenable = yes

priindication=outofband

group=1

usecallerid=yes

hidecallerid=no

threewaycalling=yes

transfer=yes

echocancel=yes

echocancelwhenbridged=yes

echotraining=yes

rxgain=-3.5

txgain=-3.5

busydetect=yes ;;;;;Busydetect I did set to no, and calls does not hangup so I turn to yes.

relaxdtmf=yes

immediate=no

channel=>1-15

channel=>17-31

Equipment Topologies Connection:

----? Analog Trunk line PSTN (Alcatel Ompcx Office) < – > Asterisk (E1 as PRI_NET)

Incoming goes into Alcatel and Alcatel Divert it to Asterisk via E1

Asterisk as a Auto-Attendance System?.

Asterisk ? R1.2.5 / Zaptel 1.2.5 / Libpri 1.2.2 ???.CentOS 4.3 final (Kernel 2.6.9-34.01EL)

Appreciate if some one can help.