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Some device trunk or gateway is causing all MTP resources to lockup | mtp + recvonly + 0.0

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Some device trunk or gateway is causing all MTP resources to lockup
 

::Problem Description:

Calls are not working
Error Message: Fast busy tone

CUCM Full Version: 9.1.2.11900-12
IOS Version: 15.1(4)M1
 
In the CUCM Traces I could see "Error: Endpoint failed to open receive channel"

 

Call got dropped  with the following error message: [Error: Endpoint failed to open receive channel]


>>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>

 

:: Truncated CUCM output ::

 

61295853.019 |14:09:14.595 |AppInfo  |MediaTerminationPointControl(13)::logResourceStatusinTrace -- Device Name=MTP-GW03 ResourceAvailable=110 ResourceUsed=190
61295854.000 |14:09:14.595 |SdlSig-O |AllocateMtpResourceRes                 |NA RemoteSignal                |MediaResourceCdpc(2,100,132,58845) |MediaTerminationPointControl(9,100,130,13) |3,100,13,1.55459^*^*                     |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0]  CI=45851241 ConvId=151250403 Caps[5] = cap=258(0),cap=12(60),cap=257(30),cap=259(30),cap=261(30) Pid=100,9,130,13 Type=0 Region=SYS-REG Device Capability= [0x139 DETECT_2833 PT_2833 PT_CAP PORT_CAP MM_CAP] Count=1
61295855.000 |14:09:14.596 |SdlSig-I |MXAgenaOpenLogicalChannel              |waiting                        |MediaTerminationPointControl(9,100,130,13) |H225Cdpc(2,100,189,87581)        |3,100,13,1.55459^*^*                     |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] codec=12 CI=0 mediaType=0 confId=151250403 streamFlag=F partyId=33701630 PT=F PTId=16777216 dyn payloadTypeNum=0 MediaEncrAlgo=0 ConnType=0 ReqIpAddrType=0 ipAddrType=0 ipv4=0.0.0.0:172639067 v150MER=F T38MER=F
61295855.001 |14:09:14.596 |AppInfo  |MediaTerminationPointControl(13)::star_MediaExchangeAgenaOpenLogicalChannel - PartyId = 33701630
61295855.002 |14:09:14.596 |AppInfo  |MediaTerminationPointControl(13)::fillAudioPartyIDtoMediaPidTable - PartyId = 33701630, OLCRecd=1, StartTlkRecd=0
61295856.000 |14:09:14.601 |SdlSig   |StationOutputOpenReceiveChannel        |waiting                        |MediaTerminationPointControl(9,100,130,13) |MediaTerminationPointControl(9,100,130,13) |3,100,13,1.55459^*^*                     |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] ConfId=151250403 CI=0 PacketSize=20 PayloadType=12 EchoCancellation=0 G723BitRate=0 PartyId=0x2023efe SPId=0x1000000 RFC2833PayloadType=0 mixingMode=0 partyDir=0 srcIP=.type=0 .addr=0x{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}(0.0.0.0) Port=172639067 requestedIpAddrType=0
61295856.001 |14:09:14.601 |AppInfo  |MediaTerminationPointControl(13)::star_StationOutputOpenReceiveChannel - TCPPid = [9.100.13.10692] myIP: 0x2a03010a (10.1.3.42) ConferenceID: 151250403, MediaPartyId: 33701630, msecPacketSize: 20 compressionType: 12
61295857.000 |14:09:14.601 |SdlSig   |SdlDataInd                             |wait                           |StationInit(9,100,57,1)          |SdlTCPConnection(9,100,13,10692)                                                             |9,100,13,10692.88709^10.1.3.42^MTP-GW03  |*TraceFlagOverrode
61295857.001 |14:09:14.601 |AppInfo  |StationInit: (0000013) OpenReceiveChannelAck Status=2 (Error: Endpoint failed to open receive channel), IpAddr=IpAddr.type:0 ipAddr:0x0000000000000000c6243d6650100f86(0.0.0.0), Port=0, PartyID=33701630
61295858.000 |14:09:14.601 |SdlSig   |StationOpenReceiveChannelAck           |waiting                        |MediaTerminationPointControl(9,100,130,13) |StationInit(9,100,57,1)          |9,100,13,10692.88709^10.1.3.42^MTP-GW03  |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0]  ORCStatus = 2 ipAddr=.type=0 .addr=0x{0,0,0,0,0,0,0,0,c6,24,3d,66,50,10,f,86}(0.0.0.0) Port=0 CI=0 PartyId=0x2023efe
61295858.001 |14:09:14.601 |AppInfo  |MediaTerminationPointControl(13)::incMTPResourceCannotOpenPortCounter Count=1
61295859.000 |14:09:14.601 |SdlSig-O |MXAgenaOpenLogicalChannelAck           |NA RemoteSignal                |H225Cdpc(2,100,189,87581)        |MediaTerminationPointControl(9,100,130,13) |9,100,13,10692.88709^10.1.3.42^MTP-GW03  |[R:N-H:0,N:0,L:0,V:0,Z:0,D:0] rc=2 isMultiMedia=T LCN=0 partyId=33701630 port=0 ipAddrType=0 ipv4=0.0.0.0
61295860.000 |14:09:14.605 |SdlSig-I |MXAgenaCloseLogicalChannel             |waiting                        |MediaTerminationPointControl(9,100,130,13) |H225Cdpc(2,100,189,87581)        |9,100,13,10692.88709^10.1.3.42^MTP-GW03  |[R:N-H:0,N:1,L:0,V:0,Z:0,D:0]  ConferenceID= 151250403 PartyId= 33701630 streamFlag=F ClearType= 0 PortHandling=0 ci=0 lcn=0 PT=F PTId=0 switchingToFax=F ConnType=0
61295860.001 |14:09:14.605 |AppInfo  |MediaTerminationPointControl(13)::star_MediaExchangeAgenaCloseLogicalChannel - PartyId = 33701630
61295860.002 |14:09:14.605 |AppInfo  |MediaTerminationPointControl(13)::star_MediaExchangeAgenaCloseLogicalChannel - Sending Close Channel for Party id =33701630
61295860.003 |14:09:14.605 |AppInfo  |MediaTerminationPointControl(13)::removeAudioPartyIdtoMediaPidEntry - Close Channel and Stop Talking both received for PartyId = 33701630. Removing it from our tables.
61295860.004 |14:09:14.605 |AppInfo  |MediaTerminationPointControl(13)::star_MediaExchangeAgenaCloseLogicalChannel -- Could not delete. PortReq not found in the list

>>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>                            


323VGW#sh sccp conn           !! Truncated output
sess_id    conn_id      stype mode     codec   sport rport ripaddr conn_id_tx

35407173   34038128     mtp   recvonly g729a   21034 0     0.0.0.0
35488329   34518530     mtp   recvonly g729a   18072 0     0.0.0.0
35499218   34582954     mtp   recvonly g729a   28516 0     0.0.0.0

35521700   34713899     mtp   recvonly g729a   23768 0     0.0.0.0
35548015   34866058     mtp   recvonly g729a   30860 0     0.0.0.0
35549301   34872433     mtp   recvonly g729a   18394 0     0.0.0.0
35599089   35170820     mtp   recvonly g729a   22136 0     0.0.0.0
...            ...            ...            ...            ...            ...
...            ...            ...            ...            ...            ...
...            ...            ...            ...            ...            ...
151227115  33627471     mtp   recvonly g729a   26526 0     0.0.0.0
151228338  33630742     mtp   recvonly g729a   18740 0     0.0.0.0
151249182  33691703     mtp   recvonly g729a   17376 0     0.0.0.0
151249198  33691758     mtp   recvonly g729a   31962 0     0.0.0.0
151249949  33697852     mtp   recvonly g729a   29518 0     0.0.0.0

Total number of active session(s) 273, and connection(s) 273


>>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>                            

323VGW#show call active voice br            !! Truncated output
...            ...            ...            ...            ...            ...
Telephony call-legs: 1
SIP call-legs: 0
H323 call-legs: 1
Call agent controlled call-legs: 0
SCCP call-legs: 273
Multicast call-legs: 0
Total call-legs: 275

0    : 4024018 14:50:39.531 EDT Mon Jun 23 2014.1 +0 pid:0 Originate  connecting
 dur 1w0d tx:0/0 rx:0/0
 IP 0.0.0.0:0 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729ar8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a

0    : 4368045 12:49:31.931 EDT Wed Jul 16 2014.1 +0 pid:0 Originate  connecting
 dur 4w5d tx:0/0 rx:3/60
 IP 0.0.0.0:0 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729ar8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a

0    : 4415474 16:23:13.371 EDT Fri Jul 18 2014.1 +0 pid:0 Originate  connecting
 dur 4w3d tx:0/0 rx:2/40
 IP 0.0.0.0:0 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729ar8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a

0    : 4510301 09:49:51.631 EDT Fri Jul 25 2014.1 +0 pid:0 Originate  connecting
 dur 3w4d tx:0/0 rx:0/0
 IP 0.0.0.0:0 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729ar8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a

...            ...            ...            ...            ...            ...
...            ...            ...            ...            ...            ...
...            ...            ...            ...            ...            ...
 

>>>>>>>>>>>>>>>>>>>>>>>                            >>>>>>>>>>>>>>>>>>>>>>>                   


:: Troubleshooting ::


: CUCM Traces :
+
: Following show & debug commands can help :

FYI !! before hitting any command make sure you understand the network/performance impact !!

  • show sccp all
  • show dspfarm all
  • show voice dsp group all
  • show sccp connection
  • show call active voice brief
  • show sccp connections detail
  • show sccp statistics
  • show sccp ccm group [id]
  • show dspfarm profile [id]
  • show media resource status
  • show dspfarm dsp all
  • show rtpspi statistics
  • show call history voice brief
  • show voip rtp connection
  • show sccp connections internal
  • show dspfarm dsp active

 

  • debug ip tcp transaction
  • debug sccp messages
  • debug sccp errors
  • debug sccp events
  • debug dsp-resource-manager flex dspfarm
  • debug dsp-resource-manager flex dspstats
  • debug dsp-resource-manager flex error
  • debug dspfarm events  
  • debug dspfarm error
  • debug media resource provisioning all
  • debug voip xcodemsp     !!! transcoder

 

********************************************************************************************

********************************************************************************************

 

:: Resolution ::

 

"Some device trunk or gateway is causing all MTP resources to lockup"

"35407173   34038128     mtp   recvonly g729a   21034 0     0.0.0.0"

 


conf t
no sccp
sccp

or

shut - no shut (on the dspfarm profile) released the mtp.

 

 

You may contact me on mogrover@cisco.com for further information on this or contact Cisco TAC

 

 

Comments
Enthusiast

Also getting MTP recvonly 0.0.0.0

UCM Version 9.1.2.11900-12

I am using G.711 only

MTP Router is software only, no physical DSP.

Shutting down sccp does clear it up for a while but problem returns.  Did your problem persist or any update to the case?

Beginner
Beginner

My case had been resolved, didn' get any update from the customer after that.

>

If it returns I have mentioned the bug ID, please check it.

Enthusiast

Thank you sir. 

 

Was as the fix for you to upgrade from 9.1(2)SU1 to SU2+ ?

Beginner

As per the bug notes, following are the known fixed releases:

 

 

Known Fixed Releases: 
10.0(1.11001.2)
10.5(0.98000.154)
10.5(0.98000.309)
10.5(1.10000.7)
8.6(2.24111.1)
8.6(2.24900.17)
8.6(2.24900.6)
9.1(2.11021.1)
9.1(2.12900.11)
 
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