[Serusers] Grandstream Phones

Erik Lagerway erik at xten.com
Tue Sep 2 21:18:10 CEST 2003


Gavin,

REFER is coming shortly [within 3 weeks] along with many more features. When
we are finished with REFER we would be happy to do some interop testing with
Grandstream.

Cheers,
Erik
  -----Original Message-----
  From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org]On
Behalf Of Gavin Bensom
  Sent: Monday, September 01, 2003 1:02 AM
  To: serusers at lists.iptel.org
  Subject: Re: [Serusers] Grandstream Phones


  Hello All,

  It is actually X-ten's X-Pro UA which is causing the call transfer
problem. From looking at the message headers in the data packets I can see
the following line originating from X-Pro.

  Allow: INVITE, ACK, BYE, CANCEL, OPTIONS

  The Grandstream UA headers have the following:

  Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, INFO, SUBSCRIBE

  I don't know why X-Pro is so limited. I had X-Lite [the limited version]
installed on the same PC. X-Pro is supposed to enable all supported
features. Anyone at X-ten care to comment?
  I uninstalled both X-Lite and X-Pro and the reinstalled only X-Pro and
still get the same behavior.

  Awhile back someone asked for a link or copy of Iptel's ser.cfg file. Is
that available for viewing? Can the link be posted again [assuming it was
before]?

  Thanks,
  G.

  Jiri Kuthan <jiri at iptel.org> wrote:
    At 10:37 PM 8/29/2003, Gavin Bensom wrote:
    >Hello,
    >
    >Has anyone used the Grandstream BudgeTone-100 phones with SER? When I
try to transfer a call the call gets disconnected.

    Yes, but I haven't tried the transfer feature. Note that it is
reponsibility
    of end-device to implement call transfer correctly. SER just processes
call
    transfer as any other SIP transaction.If you find any explanations about
the
    roots of the problem, please share it with us over the mailing list.


    >
    >The grandstream documentation shows the transfer protocol here:
    >http://www.grandstream.com/user_manuals/budgetone100.pdf [pg 15,16 of
the .pdf]
    >Any ideas what is happening? Is the Grandstream protocol compliant with
what SER expects for transferring calls?
    >
    >Also, does S ER support the 484 Incomplete address response?

    SER supports any responses, including "100 thanks for calling", "101 we
are trying
    for you", "102 have a nice day, I'm connecting your call", etc -- it is
a configuration
    option what you send back. You just need to design a proper numbering
plan and
    return 484 if GS's INVITEs include incomplete numbers.


    >The BudgeTone phone can be set to send an INVITE after every button
press, and will continue to do so if the server response with incomplete
address instead of 404 not found.
    >
    >Finally, if users passwords are set to (null) will a phone that
registers with a username but no password successfully register? [I haven't
tried it yet].

    No -- that would allow anybody who supplies empty password successfuly
    steal my incoming calls.

    -jiri



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