call disconnect

[bigmonkey70]

I have alot of complain that calls are dropped for both incoming and outgoing to landline. Calls are drop through out the day, not in any pattern and a random minutes into the call and for both local, and long distant. So most likely the T1 aren't the source of dropping call

We have 2 T1 (1 PRI for all the local/in-state and a T1 for long distant) hooked up to a dual T1 card. System is IPO 412 with 4 DS-30 and 1-8 ports analog module.

I look at the reports but unable to find a pattern. Can it be a bad system?, etc. Anyone have any idea?

Thanks
Kenny

 

[IPhello]

I would make sure that the phone company is only timing on one of the T1's and your should have the 2nd one set to fallback. I've had this happen a couple of times for this reason.

 

[bigmonkey70]

That's the first thing I checked to make sure one is set to network and the other set to fall back. It didn't help at all ...

 

[mforrence]

So you can't narrow it down to either the T1 or PRI? Do you get inbound calls on T1? If not, then at least some disconnects are happening on PRI. Leave monitor running and get someone to log disconnected calls - see what the disconnect code shows in monitor.
Mike

 

[bigmonkey70]

From the monitor log, look like a "Speechpath disconnected " right after OutgoingHandshake on the T1 Long distant line.

PRN: T1 Channel: E&M 2.24: Transmit T1EMOffHook
PRN: T1 CAS: Channel E&M 2.24: TX: 0000 -> 1111
PRN: T1 Channel: E&M 2.24: StateChange Idle->OutgoingHandshake
PRN: T1 DSP: Slot A (Dual): Chan 47 Speechpath Disconnected
PRN: TFTPServer::RRQ(from 10.155.1.83) nasystem/call_info/0.69920.0
PRN: T1 Channel: E&M 2.24: StateChange OutgoingHandshake->AwaitWinkStart

Anyone has any idea what's that mean?

Thanks
Kenny

 

[bigmonkey70]

Previous post look like calls never got connected.

Below seem like when the call dropped after connected for a few minutes

CD: CALL: 0.72710.0 BState=Connected Cut=2 Music=0.1 Aend="DSmith(7447)" (18.26) Bend="Line 2" [Line 2] (35.22) CalledNum=13193462331 () CallingNum=7325077300 () Internal=0 Time=121809 AState=Connected
CMCallPkt: v=72710
CMReleaseComp
Line: type=NoLine 0
Call: lid=0 id=72710 in=0
Calling[7447] Type=Internal (101)
BChan: slot=18 chan=26
Product Unknown

CDR: Update CDR condition code for call 01be75f0 [CALL:S 0.72710.0,0.72711.0,2,2,0,0,1,1,DSmith(7447),Line 2,,18.26,35.22,100.100,13193462331,100.100,7325077300,,,100,913193462331,100,,0,16,0,0,16.0,,,,,,,0,121811,121811,121816,0,4,enu,,0,,0,0,334232809mS CDR: Update CDR Condition Code for call 01be75f0, ConditionCode='A' (cause=CMCauseNormal), conf=00000000 [primary call=00000000]

CDR: Update CDR Condition Code for call 01be75f0, ConditionCode='A' (cause=CMCauseNormal), conf=00000000 [primary call=00000000]

PRN: CALL: 0.72710.0 Deleted leaving 10 CMCall objects
PRN: CMCallReleaseStart 0.72711.0
PRN: T1 Line: 2.21: ClearCall
PRN: T1 Line: 2.21: State Change Active->DiscReq
PRN: T1 Line: 2.21: Sending LL Message: Drop
CD: CALL: 0.72710.0 Deleted

Causes

 

[janni78]

What software version are you using?

 

[ronromano]

First, how long have you been using this system? Is it a new install.

Second, are the PRI and T1 from the same carrier?

Three, Does the user or the caller hear inceasing ststic before the drop?

 

[bigmonkey70]

I upgraded the system to the latest 3.2 version because of the dual T1 card bug in the previous version. It doesn't help.

It is a new install about5-6 months ago.

PRI is from Telcove and T1 is from Qwest.

No static ... The call just dropped. Some time dial then drop without connected.

Latest update:

As a precaution of the dual T1 card, I installed a single T1 card on the 2nd expansion slot. Move the T1 to this card ... for the last couple of days so far I haven't heard any complain yet ... I hope its the dual T1 card problem that can be exchange under warranty. Finger cross

 

[MrBob622]

Did the single T1 solve your problem?
I have a 406 with a dual T card and now after upgrading the system to the latest build the users are complaining of dropped calls.

 

[momoko]

I have a 412 with a dual PRI card with 2 PRI's.

The phone system allocates PRI 1 and 2 alternately, but once is gets to 22 connected calls any other inbound or outbound call either displays Disconnect on outbound or busy signal on inbound

Here are the tests I ran:

note I altered the name and outbound numbers to (Blanked)

With both PRIs in service and connected


Made 11 calls to the conference centre (Total of 22 inbound and outbound calls listed on status as 11 line 2 and 11 for line 1) next call showed disconnect (excerpt from log file below)





Put PRI 1 Channels all out of service and disconnected PRI from phone system.


Made 11 calls to the conference centre (Total of 22 inbound and outbound calls listed on status as line 2) next call showed disconnect



Put PRI 2 Channels all out of service and disconnected PRI from phone system.


Made 11 calls to the conference centre (Total 22 inbound and outbound calls listed on status as line 1) next call showed disconnect





For some reason it looks like the phone system cannot pick up a Line/Channel once 22 are in use, it doesn’t matter if it’s on PRI 1, PRI 2 or both. I’ve look through the log file and configuration extensively and nothing jumps out at me as being incorrect.









I’ve highlighted the error code in red.







498825mS PRN: call->mobile_twin_line == this - 0

498825mS PRN: call->off_switch_bchan.slot - 00000000

498825mS PRN: msg.bchan.slot - 00000021

498825mS PRN: call->off_switch_bchan.chan - 00000000

498825mS PRN: msg.bchan.chan - 00000003

498825mS PRN: is_quick_answer_on_master - 0

498826mS PRN: call->Bstate - 8

498826mS PRN: call->Bend != this - 0

498826mS PRN: msg.cause - 34

498826mS CD: CALL: 0.1080.0 BState=Disconnecting Cut=3 Music=0.0 Aend="Mxxxx Mxxxx 2(1505)" (19.13) Bend="Line 1" [Line 1] (33.3) CalledNum=blanked () CallingNum=1505 () Internal=0 Time=1834 AState=Dialled

498827mS PRN: CALL: 0.1080.0 Deleted leaving 22 CMCall objects

498827mS CMMap: a=19.13 b=33.3 M0

498829mS CALL:2007/01/2812:44,00:00:00,000,1505,O,blanked,**522,MxxxxMxxxx2,,,0,,""n/a,0

498830mS CD: CALL: 0.1080.0 BState=Idle Cut=0 Music=0.0 Aend="Mxxxxx Mxxxxx 2(1505)" (19.13) Bend="Line 1" [Line 1] (33.3) CalledNum=blanked () CallingNum=1505 () Internal=0 Time=1838 AState=Idle

498831mS CMExtnTx: v=6845, p1=11

CMInbandTone

Line: type=DigitalExtn 5

Call: lid=0 id=1080 in=0

Product Unknown

UUI type=User2User [TB2\r\n] [0x54 0x42 0x32 0x0d 0x0a ]

Cause=34, No cct/chan available

Timed: 28/01/07 12:44

498832mS CD: CALL: 0.1080.0 Deleted

501383mS CMExtnRx: v=6845, p1=11

CMRelease

Line: type=NoLine 0

Call: lid=0 id=1080 in=0

Product Unknown

501384mS CMExtnTx: v=6845, p1=11

CMInbandTone

Line: type=DigitalExtn 5

Call: lid=0 id=-1 in=0

Product Unknown

UUI type=User2User [TB0\r\n] [0x54 0x42 0x30 0x0d 0x0a ]

Timed: 28/01/07 12:44

501385mS CMExtnTx: v=6845, p1=11

CMReleaseComp

Line: type=DigitalExtn 5

Call: lid=0 id=1080 in=0

Product Unknown

UUI type=Local [....] [0x03 0x00 0x00 0x0e ]


Thanks for any help