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- Phone answering then dropping call

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03-10-2015 03:24 PM
A customer is using a VVX400 running 5.1.3.
Randomly, after answering an inbound call the phone will immediately hangup. In our traces we see the INVITE go to the phone, Trying/Ringing come back, followed by the OK, and we send the ACK, and then the phone sends BYE.
I enabled syslog level 2 on the phone and captured the following when one of those calls occurred:
12 0.096361000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 211 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |2|00|CCallBase::IsChallenged 'INVITE' Dialog Tag '4BB2C25E-22A08AAD' pRequest Tag '4BB2C25E-22A08AAD' state 'Trying'\n 14 0.097446000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 169 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |2|00|new UA Server INVITE trans state 'proceeding', timeout=0 (0x40e3d888)\n 15 0.097785000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 174 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |3|00|CStkCall::NewCallState 'Unknown'->'Offering' (0xb95760),Control Channel(0)\n 19 0.142244000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 145 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |2|00|SipOnEvNewCall new call appearnce 1 SRTP key \n 20 0.142789000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 143 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |2|00|SipOnEvCallNewState b95760,100d868 1,(null)\n 21 0.143290000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 115 LOCAL0.INFO: Mar 10 14:52:35 192.168.1.196 0310145235|sip |2|00|SipSendRingback\n 22 1.155834000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 157 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|SipCallAnswer b95760,100d868, SDP template is not present\n 23 1.156303000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 141 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|CStkCall::ReportCodec: held set to false \n 24 1.156795000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 206 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|SipOnEvNewCodec 18 18 G729/8000 24926,2256 ptime=20,dir 2 index 0 lastCodec 1 callWithVideo 0 bandwidth -1\n 25 1.157301000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 218 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|SipOnEvNewCodec 101 101 telephone-event/8000 24926,2256 ptime=0,dir 2 index 0 lastCodec 1 callWithVideo 0 bandwidth -1\n 27 1.201014000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 172 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |3|00|CStkCall::ReportCodec: call state 'Offering' exit with held 0 (0xb95760)\n 30 1.203056000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 199 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |3|00|UA Server INVITE INVITE trans state 'proceeding'->'terminated' by 200 resp 4998 timeout(0x40e3d888)\n 31 1.204593000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 193 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|CTrans::InitRetrans for UA Server INVITE INVITE state 'terminated' Server 1 of 1 (0x40e3d888)\n 33 1.346579000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 154 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |3|00|CStateInviteServer::OnEvRequest ACK setting call state\n 34 1.347080000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 176 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |3|00|CStkCall::NewCallState 'Offering'->'Connected' (0xb95760),Control Channel(0)\n 35 1.347387000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 146 LOCAL0.INFO: Mar 10 14:52:36 192.168.1.196 0310145236|sip |2|00|SipOnEvCallNewState b95760,100d868 4,Connected\n 40 3.191816000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 135 LOCAL0.INFO: Mar 10 14:52:38 192.168.1.196 0310145238|sip |2|00|SipCallDrop b95760,100d868 reason 6\n 41 3.192696000 75-119-251-51.dsl.teksavvy.com ndp.green.versature.com Syslog 137 LOCAL0.INFO: Mar 10 14:52:38 192.168.1.196 0310145238|sip |2|00|CStkCall::Drop(reason = 6) (0xb95760)\n
What does reason 6 mean here?
(I also have the SIP signalling, but it's just standard INVITE/Trying/Ringing/OK/ACK/BYE etc, I can provide if necessary).
I see related tickets to this "Immediate SIP 503 Service Unavailable from a Soundpoint IP phone" and "Dialing SIP URL hangs up immediately on VVX 410" where a reason 6 was given, but no explanation as to what reason 6 is.
Does this syslog provide enough infomation or do I need to turn up the logging level higher?
03-10-2015 03:44 PM
Hello Squigley,
have a look at the KEY logging.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
03-12-2015 09:11 AM
Hi Steffen,
Thanks for your response. Could you please elaborate as I'm not familiar with KEY logging. I searched but couldn't find anything, unless you're referring to the key combinations which cause the phone to upload a -now log file?
03-12-2015 10:44 AM
Hello Squigley,
for example log.level.change.key="2"
Should show something similar to this:
0312172107|key |2|00|Time=005910.570 HookUp 0312172108|key |2|00|Time=005911.680 HookDown
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
Notice: I am an HP Poly employee but all replies within the community are done as a volunteer outside of my day role. This community forum is not an official HP Poly support resource, thus responses from HP Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
If you need immediate and/or official assistance for former Poly\Plantronics\Polycom please open a service ticket through your support channels
For HP products please check HP Support.
Please also ensure you always check the General VoIP , Video Endpoint , UC Platform (Microsoft) , PSTN
03-13-2015 11:00 AM
Thanks Steffen,
I understand now. I think this will help, as the customer is also complaining that the phone shows it's on a call when it's not. They sent us a picture of the screen of the phone, and it shows the normal "Enter number/lines/end call" screen which appears when you pickup the handset.
I suspect they have a defective hook switch, and that's the cause of the phone hanging up calls, and prompting for a number when it's supposed to be hung up.
I will check the logs, and depending on that we'll probably RMA the phone.