[Asterisk-Users] X100P Echo Problems..What's going to happen?

[Uriel Carrasquilla]

John:
I don't use MSN so I can't comment.  I do know that when my connections are
pure VoIP (no analog PSTN connections), the quality is better if enough
bandwidth is available.
TCP is a protocol that gets used when you want to make sure a packet arrives
at the other end.  UDP is better for voice because you don't want packets to
be retransmitted and have to wait to assemble them on the other end in
sequence so the conversation makes sense.
Regards,
Uriel
  -----Original Message-----
  From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of John M
  Sent: Monday, October 13, 2003 11:18 PM
  To: asterisk-users at lists.digium.com
  Subject: RE: [Asterisk-Users] X100P Echo Problems..What's going to happen?


  What I don't understand is why MSN messenger is perfect with no echo?  I
switch back and forth and still hear a big difference.  I believe MSN is
using TCP rather than UDP.  Can * run on TCP rather than UDP?  I think this
makes senses and can eliminate that echo.



  -----Original Message-----
  From: Uriel Carrasquilla [mailto:uriel at adelphia.net]
  Sent: Monday, October 13, 2003 10:02 PM
  To: asterisk-users at lists.digium.com
  Subject: RE: [Asterisk-Users] X100P Echo Problems..What's going to happen?



  John:

  I have been around voice over data packets for quite a few years and I am
still to see the perfect system that works identical to circuit switching
100% of the time.  My opinion is that there is a lot more to the story than
just parameters.  Packet loses, double compressions, faulty routers,
bandwidth, analog to digital and so on can get in the way.

  On the other hand, if your customer understand the benefits, and I mean
more than cost, and can leave with 80% perfect, then you will be able to
understand why a lot of companies have opted for VoIP (or ATM or Frame
Relay).

  Regards,

  Uriel
   -----Original Message-----
  From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of John M
  Sent: Monday, October 13, 2003 1:41 AM
  To: asterisk-users at lists.digium.com
  Subject: [Asterisk-Users] X100P Echo Problems..What's going to happen?
  Importance: High

    I've read and experienced the echo problems with the X100P.  Is Digium
going to fix the problem or refund our money?  I want to see this work
because myself and other small companies out there use analog lines.  I
would trade up to T1 but that requires me to have at least 9 lines.  If I
did trade up, do the T1 cards work perfectly with no echo at all?  I get
echo with my directly connected computer using Xten SIP.  No matter with all
the suggestions to change the parameters, it still has echo.



    Does anyone have the T1 and have no problems at all?  I would surely
appreciate you experiences.  What's my option to get this too work
flawlessly?



    John



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