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Thread: Conference Calls

  1. #1

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    Hi:

    I got several Linksys SPA922s with a Quadro 4X and I am having problems trying to set up conference calls basically what happens is this:

    I am trying to set up conference calls, if I receive a call, use the
    "conf" softkey and make a new call to make it join the conference and
    then use the "conf" softkey again, all calls are dropped on the three
    phones

    Has anybody have had this problem?

    Regards

    Daniel Cristini


  2. #2

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    Linksys SPA922s phones are not tested in Epygi lab and not in our Supported Phones list, hence we do not guranatee the correct funcionality of all the features of that phones. Have you tried the button sequence "Hold + Conf", as it work in other phones ? Let's say you have one active call, then pressing Hold,calling tothe secondparty and pressing "Conf", when one call is active and the second one is on Hold.

  3. #3

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    Yes, I have tried that, with the same result.

    If the SPA922 is not supported I guess there is not much more I can do, I have already installed the latest firmware on both the Quadro and the SPA922s, there is however one last question, while checking on the Quadro Call Statistics, in the Succesful Calls section I get an interesting status in the detail section of all the tests I have tried with conference calls:
    Close Reason: CM note: "Not Supported", could you please tell me what that means?

    Regards


  4. #4

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    It means that the SPA922 is initiating the Conferencenotby SIP standards, so our Call Manager is rejecting it. It can be seen in the SIP traces of Quadro and phone.If all other features, like Transfer, Hold, etc. work normal, then probably there is a bug in Conference functionality of the phone. Have you tried to use that Conference in stand-alone configured SPA922 ? You can also turn to Linksys Support with that question.

  5. #5

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    Another Question, where can I get a list of supported IP phones for the Quadro?

  6. #6

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    The list of Epygi Supported phones can be found in Online Help,Release Notes, also you can get familiar with the "ConfiguringEpygi Supported IP-Phones" and "ConfiguringEpygiTested IP-Phones"documents, that can be found in our WEB, under "Support Login -> Downloads ->Configuration of IP Phones and IP Lines" section. Actually there are two groups of IP-Phones, that we recommend to configure and use with Quadro. First one is Supported Phones. That are SNOM 300/320/360, Aastra5xi series and Aastra480i(CT)/9133i/9112i phones. We have Plug-and-Play functionality for them and they support all the Quadro features. The second catergory is the tested phones, such as different models of Polycom and Grandstream phones, Cisco7960, SipUra, Berkshire5000, etc. We have autoprovisioning for these phones and the Quadro features are work on these phones with some restrictions/differences. All that functionality is described in the documents, that you can find in the same place, as I wrote above. You can find the list of these phones also on the "Telephony -> Line Settings -> IP Line Settings" page, by clicking on some IP-Line.

  7. #7

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    Are you the same guy that posted in the Linksys forum? I have one SPA922... I just tried some conferencing.
    Here's what I tested:
    SPA922 calls SPA962
    SPA962 answers
    SPA922 presses conf and calls SPA942
    SPA942 answers
    SPA922 presses conf key - and the conference is established.

    I also did it leaving out step 4 so putting the SPA942 into the conference without consultation.

    I then also tried with the SPA962 calling the 922 and the 922 conferencing in the SPA942, and combinations with other phone types.. I never had any issue whatsoever.

    As aramk pointed out, you need to look at traces next. However, I've heard of this happening even when the phones are connected to the Linksys SPA9000 - though, nobody ever managed to reliably reproduce the problem.


  8. #8

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    Actually the "conf+conf" combinationis thecommon one for the IP-Phonesto initiate a Conference, but in his first postarquimedesl said that it isn't work at all. Maybe that is not permanent problem, don't know ...

  9. #9

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    Sorry I haven't answered, been playing the project management game for a bit...



    Quote Originally Posted by aramk
    The list of Epygi Supported phones can be found in Online Help,Release Notes....


    Thank you for the info, I noticed that in the list of Supported phones
    are three models of Grandstream we use, I will test conference calls
    with them in order to rule out if the problem is with the the
    configuration of the SPA922s or a configuration problem in the Quadro.



    Quote Originally Posted by ssteiner
    Are you the same guy that posted in the Linksys forum?
    Yep, that's me, the username is different here because it was registered by the guy that used to handle the Quadro before.



    Quote Originally Posted by ssteiner

    I have one SPA922... I just tried some conferencing.

    Here's what I tested:

    SPA922 calls SPA962

    SPA962 answers

    SPA922 presses conf and calls SPA942

    SPA942 answers

    SPA922 presses conf key - and the conference is established.



    I also did it leaving out step 4 so putting the SPA942 into the conference without consultation.



    I
    then also tried with the SPA962 calling the 922 and the 922
    conferencing in the SPA942, and combinations with other phone types.. I
    never had any issue whatsoever.


    Thank you very much for that info, this leads me to believe that the
    problem is not inherent to the phone or the PABX but to a configuration
    problem in either side, very good news indeed.



    Quote Originally Posted by ssteiner

    As aramk pointed out, you need
    to look at traces next. However, I've heard of this happening even when
    the phones are connected to the Linksys SPA9000 - though, nobody ever
    managed to reliably reproduce the problem.


    Ok. I will plug Wireshark in on Monday to see the traffic between the
    Quadro and at least the SPA922 that would handle the conference call



    Interestingly enough, I made a change on the SPA922: marked the option
    "notify conference" (which is unmarked by default) and what happens now
    is that the phone handling the conference won't unhold the original
    call and start the conference, however it doesn't drop the calls either.



    Quote Originally Posted by aramk
    Actually the "conf+conf" combinationis thecommon one for the IP-Phonesto initiate a Conference, but in his first postarquimedesl said that it isn't work at all. Maybe that is not permanent problem, don't know ...


    The problem so far seems permanent, however the info that I got today
    might give me some leads as to solve the problem, I now do know that
    it's not inherent to the phones or the PABX it's a configuration problem of
    some sort (of course it might be that the configuration we have NEEDS
    to be kept that way and I still don't get to solve the problem, but at
    least I now have some info to make some new tests)



    I agree, the "conf"-"conf" combination seems to be the usual way to handle conference in "high-end" IP phones.



    I have noticed that the SPA 841 is supported and auto-provisioned by
    the Quadro, so I have one question for ssteiner: is the software for
    this phone from the same family as the 922? I will configure a line
    with an 841 just to see if I can get the configuration parameters the
    Quadro considers optimal for it, if the software is is of the same
    family as the 922 it might help me determine if I need to change the
    configuration in my phones. In order to make auto-provision work I had
    to move my DHCP server to something that could handle advanced DHCP
    configuration (such as the TFTP option, since the Quadro is NOT our
    main DHCP server, we use it ONLY as a PABX)



    the other question is for aramk: from the literature I have available
    with the SPA922 it seems it can handle a three way conference by itself
    (although I don't know under which circumstances), I would definitely
    prefer to have the conference handled by the PABX, however, the 922
    also supports conference bridges, now I have read some literature on
    the Quadro that COULD be interpreted that it has a built in 7 user
    conference bridge, however no hard info on that shows up on the docs.
    The 922s support conference bridges, but of course you need some sort
    of URL for that, now the question is, is my impression correct? and if
    so, what would be the form of the URL I need?



    An amusing side-note: my boss wasn't too happy when he found out that
    the 922s were not supported, apparently the guy that sold us the Quadro
    claimed they were the recommended phones for that PABX It's clear now
    that they barely knew how to configure it (like for example using the
    G.711 codec for everything and pretending to have 5 simultaneous
    conversations on a 512k Link with a CIR of 128K), so I guess it's not
    surprising, I have been playing with this thing for about a month, so I
    am still learning how to use it. In any case, he'll be happy to know
    that somehow the SPA922s CAN do conference with the Quadro, of course
    whether I can make it work with our kit remains to be seen
    Edited by: arquimedesl

  10. #10

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    We can't say anything about SPA922, as it is not tested in our lab and we are nor aware of that phone's configuration.


    We implemented 10-party conference feature on Quadro, but it is currently not open, beacuse of some stability issues. It will be availabe soon, after the problems will be solved. It is Conference Extension, that can mix up to 10 caller in one conference.

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