SPA 962 - intermittently without audio (RTP port closed/inaccessible)

Hi all!

We recently bought 21 phones Linksys SPA-962 for our office. We took this directly from our PoE (Cisco 300) switch to our sipx box that is on the same subnet and switch (sipx does not execute iptables). Most of our phone calls works fine, but we find that periodically (for example 1 of 10 calls) we have no audio data. There is no NAT settings so it should be relatively simple.

The most interesting part of the problem is that it seems to be the phone itself. The reason why I believe that it is the phone is due to the attached pcap trace. You can see the first call in this trace is bad and the second is actually filled out correctly.

Trading on SIP, everything seems to work properly and the phone says what RTP port to be used but when sipx is trying to communicate that RTP port the phone returns an ICMP port unreachable! To set a syslog to the phone as a debug server, it appears the phone believes that he opened the receiver port but lower it attempts to send rtp of sipxecs and he can't send rtp backwards but it is because I believe that the port could not allocate/open in the first place.

I tried all four available Cisco firmwares that I could find, and they all have the same question. I tried also to place the phone on it's own VLAN, I tried SRTP, tried symmetric RTP, I tried Sticky 183 and nothing seems to resolve the behavior.

Do we have bad phones?

We have also a gateway Grandstream ATA with polycoms attached and all those phone calls 100% of working time.

Thanks in advance!

I got it. Disable CDP on the page of the system. That's all.

Tags: Cisco Support

Similar Questions

  • 9.1 - multiple formats without audio update

    Since the last update. Oddly enough, I had to redo the link again many my video clips.

    However, I was invited the following audio error...

    audio.jpg

    MOV files, as well as several other formats (.mp4, .mpeg, .avi) read as a video only - it seems to omit the audio portion of video files?

    The strange thing is when I try to re - import the clips into my video project is only imported without audio.

    But if I slip and fall, it works.

    any ideas?

    Hello

    I tried to decipher what is happening with this issue; It seems to be very environmental. You can try the following:

    (1) delete all files cache and accelerator - CFA, PEK, IMS and files in the folder media Cache (CMPD extension). Do it with closed first, from the Explorer. The location of the file cache may vary if you have changed this preference, but by default are in C:\Users\username\AppData\Roaming\Adobe\Common.

    (2) rename your media folder containing files that fail to import.

    (3) open your project 9.0 original once again (not the one previously converted).

    Let us know your results.

    Colin

    First Pro EQ

  • Filming without audio

    Appliances digital cameras generally provides a way of filming without audio?  This would save memory, or is the audio component that is too small to make a difference?

    I own a Canon PowerShot SD1300 IS (IXUS 105 in North America), but I have a sneaking suspicion that the answer (either or not) apply to most digital cameras.

    The PowerShot 3 I've owned audio is automatically included for any normal shooting mode (maybe for ultra-fast frameworks for idle movies that it wasn't).  I just watched a few movies taken with SX280 (video with audio MP4 h264) and my 1300IS (Motion JPEG with PCM audio). In 3 movies, I checked that the audio component was only 1-2% of the total size of film.

  • Telepresence Server RTP ports

    Hi all

    I've recently updated 5320 MCU to 320 TS. I searched the documentation for the RTP port range used by the telepresence server, but it is never mentioned. What is the range of ports, and can we change it?

    I have deployed infrastructure with XC2.2 driver in the B2BUA deployment model and a TS on 5320 version 3.1.

    Sent by Cisco Support technique iPad App

    Hi Paul,.

    Take a look at this article, this applies to all products Conference Tandberg/Codian, including TP server too, as you can see:

    http://www.Cisco.com/en/us/docs/Telepresence/infrastructure/articles/conferencing_products_conferenceme_ports_used_kb_3.shtml

    According to the document, ports between 49152 to 65535.

    Concerning

    Paulo Souza

    Please note the useful answers and do not forget to mark questions resolved as "responded."

  • How to load the clip on the timeline without audio

    How to load a clip to the timeline without audio?

    Hello

    Open in the Source monitor, then click on and hold the video icon, drag the video only.

    Vinay

  • soundChannel behavior without audio driver

    Hello

    I don't know if it's AS3 or Air forum /FB4 I should ask this:

    I'm testing my application on cell phone look older without audio drivers and the problem is when I want to call the SoundChannel.stop () function. Well I don't know what the problem is, I only managed it draw this line of code that calls stop() and now I don't know what to do because there was no alert error or nothing. Code stops just at the level of this line.

    I don't even know if that's the problem with the audio driver.

    I tried to look in google for answers and I found that the play() function returns NULL when there is no drivers, but found nothing on function stop().

    Edit:

    I have prepared sample application:

    <?xml version="1.0" encoding="utf-8"?>
    <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init(event)">
      <mx:Canvas width="500" height="500">
      <mx:Text id="txt"/>
      <s:Button id="btn" label="stop" click="btnClick(event)" bottom="0"/>
      </mx:Canvas>
      <fx:Declarations>
      <!-- Place non-visual elements (e.g., services, value objects) here -->
      </fx:Declarations>
      <fx:Script>
      <![CDATA[
      import mx.events.FlexEvent;
      private var snd:Sound = new Sound;
      private var sndCtrl:SoundChannel = new SoundChannel;
    
    
      protected function init(event:FlexEvent):void
      {
      snd = new Sound;
      snd.addEventListener(Event.COMPLETE,sndLoaded);
      var url:URLRequest;
      url = new URLRequest("df1_fi1.wav");
      snd.load(url);
    
      }
    
      private function sndLoaded(e:Event):void {
      snd = e.target as Sound;
      sndCtrl = snd.play();
      }
    
      protected function btnClick(event:MouseEvent):void
      {
      txt.htmlText += "before stop <br>";
      sndCtrl.stop();
      txt.htmlText += "after stop <br>";
      }
    
      ]]>
      </fx:Script>
    </s:WindowedApplication>
    
    
    

    Use any sound in place "df1_fi1.wav", export, install, and lunch this app, then press the button. On the computer with the audio driver, you can see 'before' and 'after' text on screen. On portable unmanned audio, you can see only the text "before".

    OK, I managed to install Flash Builder on this old laptop and debug this application.

    Problem is that soundChannel is null, the system without audio drivers. So every time I run sndCtrl.stop () there is a deviation from a plant object and vacuum system.

    I just need to make exceptions, such as:

    If (sndCtrl) sndCtrl.stop ();

  • give the user an option to use with audio or without audio

    How to give the user to use published.exe with no audio and audio options?

    If they want with audio just click audio or without audio

    IM using captivate 5.5

    Win 7

    There is a mute on the playback bar button.  All the user has to do is click here to disable audio.  If you have done the captioning text and it synchronized with the audio, it will always show even if the sound is muted.

  • Question - export without Audio

    Together with Photoshop CS5 Extended.

    I opened a video clip that contains audio and audio plays in the timeline with the video.  Object converted to chip and the applied filter.  When I export the clip I see that there is no audio data.  The dialog box tells me there is no audio data and the exported video plays without audio.

    How to export the video changed to include the audio track?

    Failure is here:

    Object converted to chip and the applied filter.

    Audio export only works at the root level. Try to use a layer duplicated as the audio source...

    Mylenium

  • Import MTS clips without audio

    I'm importing from an SD card, MTS clips. There are 212 of them, and for some reason, the last 20 or more are to come in without audio. I deleted and don't re-import of the camera itself and no luck, same thing (audio and video). Any ideas what I was doing, how to fix? I'm new to PP, first time production.

    Thanks, Ben

    PP CS4 v4.0

    Mac OS x 10.6.8

    Intel Core 2

    Do not copy the individual files on your hard drive... copy the entire folder that contains the file from your camera to your hard drive, so the 'metadata' are copied onto your computer, and then import the files in this folder from the hard drive

  • USB &amp; Firewire audio interface ports still work as input and output?

    I guess everyone has to start somewhere, even if it is borne by almost everyone I would like to know the answer to my questions, perhaps with good reason, what I don't know is so if the USB ports unique connection and firewire on an audio interface function ALWAYS both as input AND output.  In other words, whenever I read the information about the product on audio interfaces, no matter where I go, it is generally accepted that most people buy their audio interface for RECORDING.  And so when most people talk about connecting their Apple computer, iMac or MacBook Pro, it is generally accepted, they turn to the USB as INPUT.  That's all very well and good.  But in my case, I want to use the USB port as output (not the taken mini) and go into an audio interface that gives me as a symmetric output signal that I can plug my amplified studio monitor (which has only a balanced XLR input). All of the examples I see with audio interfaces address registration and involve the use of the USB on the audio input interface.

    So my question is: can one USB port I see on any number of audio interfaces always function both of the inputs and outputs? It takes, but if so, why does any site mention this fact and whey didn't they show in all the diagrams of the audio interface manual hook to studio monitors?  I know what may be obvious to some, but as a user with the intention not to use a piano for a scene while but rather a keyboard/MIDI controller that is attached to the iMac to be able to use the virtual instrument software, I need to go to the controller to the iMac, then the iMac in symmetrical powered monitors. Do the balanced inputs of speakers requires more than a simple adapter to give the President a balanced input.  But nobody talks about audio interfaces usually unless they talk about as a way into the computer to record.  As for my situation? Why don't they include this example?  And why should they assume that novice will automatically KNOW that the usb port, an audio interface will work as an output as if they never EVER mention this example or Setup?  I guess it is to operate in both directions!  But really, I'm crazy to wonder when no one never speaks or shows this configuration? He suggested I buy something similar to a UR22MkII of Steinberg, who has a USB port. Even the Steinberg site speaks only records and so using the USB key as input for use with the recording software. There is no mention of its use out the mac in balanced speaker entries, even in the manual. In fact, it is question is always true for every audio interface manual that I watched, even by other manufacturers! Why they all assume a novice like me (whose money is just as good as money from the experienced user) KNOW that? It's frustrating!

    I know that this is not strictly a matter of logic, but I guess, in my view correctly, that a logic user community could be more appropriate to address my question for others communities. If I'm wrong, please help to re-send-the matter.  Thank you.

    Sound the interface itself that determines it can send and receive Audio or Midi... not the USB or FW port which both are devices of e/s...

    All USB and Midi peripheral FW are inputs and outputs

    All the USB and Audio FW are inputs and outputs...

    All devices USB or external hardware with a USB port... can handle Midi and Audio...  Some do... Most manipulate just Midi... or just Audio

    The Steinberg UR22MkII manages Audio and Midi...

    However, I do not recommend USB 2.0 audio devices... There are simply too many cases, problems and questions after the major updates for OS X with such devices especially when they are class compliant (IE without driver), even if the UR22MkII Steinberg is supposed to be compatible 10.11...

    View the other may vary... because it's just a personal opinion based on my past experiences both in my studio... and based on the many issues presented here and elsewhere.

    I'm sticking with Motu equipment for all my Audio devices... and I use iConnect devices for my Midi needs...

  • desktop without audio

    New Office HP 500 410 t with WIN 8.1

    Connecting the speakers USB from my old computer (DELL), I think is analog.

    Then I tried a digital one, BOSTON BA735.

    In both cases without the audio.  ???  Help

    RTOUG wrote:

    New Office HP 500 410 t with WIN 8.1

    Connecting the speakers USB from my old computer (DELL), I think is analog.

    Then I tried a digital one, BOSTON BA735.

    In both cases without the audio.  ???  Help

    Difficult to get a card on this computer from HP.  Really stripped model, they don't have a lot of product specific information.

    Have you tried to connect the headphones to the headphone jack on the front of the computer?  See if you have found all the sounds in the headphones Jack.

    What you call "Speakers USB" is misleading.  The USB connection is only energy.   The sound signal comes from taking round green mini plug to the back of the computer.  You must use a mini cable plug round green your speakers or your monitor if it built in speakes.  IT IS THERE NO SOUND FROM THE USB PORT.

    Perhaps you have not connected the audio cable, I described.  It is possible that the rear audio input jack is disabled in the control panel.  Open Control Panel, click on sound and make sure that the rear audio input jack is not disabled.   If this is the case, turn it on.

    I hope this helps.

  • iPhone 6 + Audio input ports?

    There are several third-party accessory (audio) microphones for iPhones. Some plug into the headphone jack, others via the port of lightning. A port offers superior audio to entry on the other? Other reasons to enter via one port on the other?

    The only advantage that I see at the front, is that a mic that accesses the headphone jack can be used on many other devices. The options are much more limited with a lightning port device.

    Thank you

    Input audio jack for headphones is mono only.  Lightning port microphones can be stereo.

  • Apple TV 4th generation is missing optical audio cable Port. How can I connect to my receiver?

    I just replaced my Apple TV with the 4th generation model. The 4th generation model has more an optical audio port. How to connect Apple TV to my receiver with surround sound?

    Read this:

    Apple TV4 lack of Audio output - answers

  • Audio usb port

    I am running XP & want to send audio from a USB port on my laptop to a DAC that then connects to my stereo.

    I don't want to not use the exit 'helmet' because it is an analog output.

    I checked the settings the "sound and audio devices > audio" tab & the only choice I have in the drop-down list is exit Realtek HD audio.

    Do I need to install some software & and/or a driver to pass the audio from a USB port?

    I am running XP & want to send audio from a USB port on my laptop to a DAC that then connects to my stereo.

    I don't want to not use the exit 'helmet' because it is an analog output.

    I checked the settings the "sound and audio devices > audio" tab & the only choice I have in the drop-down list is exit Realtek HD audio.

    Do I need to install some software & and/or a driver to pass the audio from a USB port?

    It will come with all USB audio device (sound card, speakers or converter) you buy.

  • E6540 audio E-Port has stopped working

    I have an E6540 connected to a Port E-docking station, Windows 7 Professional 64.

    I just upgraded to the latest version, i.e. BIOS to A16, drivers Audio and audio manager at NCN00_WN32_6.0.1.6069_A11, and now the speaker on the dock Jack is not working. He even appear on the list of audio devices. The built-in speakers/mic and headphone jack on the laptop works fine, as does everything else on the dock (video, USB...).

    After upgrading the BIOS to A17, the port dock now works as "helmet", as long as nothing is connected to the helmet on the machine itself.

Maybe you are looking for

  • 32-bit windows on the computer OEM portable 64-bit?

    Hi guys! I use a lenovo g550 model with an Intel t4500 Penium 20023. official website of the intel, as you can see here, this processor has a 64-bit instruction set, which shows that he is a computer portable 64-bit... But when this laptop was brough

  • How to connect a sony e reader .instructions say go to settings on my computer

    can someone tell me where to find settings my ereader said click on my computer, then settings, but I cany find settinga

  • T420s external microphone does not work

    I just bought a T420s, 4174-P5G Type, I want to use an external stereo microphone (Sony ECM-719) rather than the built-in microphone, but as soon as I plug the combined headphone/microphone jack, the microphone is recognized as helmet. Anyone has an

  • Cannot connect pc to the xbox with the befsr41 or upgrade firmware

    Hi, I bought a used befsr41 v.2 router and it worked perfectly, could connect my pc to the xbox and watch the videos/photos/music. A few months later router exploded and so I bought a new v.4 befsr41. Now my xbox says there is no connected computer.

  • Context dependent contextActions

    Hello I was wondering how to make the context dependent contextActions. For example if I have a list of unread and read messages: How can I get the context menu to display the option "Mark as read" for unread items and 'Mark as unread' for elements o