[asterisk-users] No reply to our critical packet

[Lincoln King-Cliby]

My best guess at the root cause of the problem after looking at the packet capture was that the phone was not happy seeing the call "connected" before any of the intermediate states (trying, ringing, etc.) and Ringing() generated the session progress (e.g. in addition to the in-band ringback it also generates the SIP message to tell the phone that the phone is ringing... or maybe it just generates the SIP message and the phone generates the ringback) necessary to make the phone happy; I don't think Playback() does the same thing. 

-- 
Lincoln King-Cliby, CTS
Applications Engineer 
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 | F: 440.729.0884 | I:http://www.thecontrolworks.com/ 
Crestron Authorized Independent Progammers

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Danny Nicholas
Sent: Friday, March 13, 2009 2:22 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: Re: [asterisk-users] No reply to our critical packet

Not a better hack but perhaps more palatable to the listener
Playback(please-wait)
Wait(1)

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Lincoln
King-Cliby
Sent: Friday, March 13, 2009 1:16 PM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: Re: [asterisk-users] No reply to our critical packet

I had this issue with SIP Phones (Cisco 7961) to local voicemail; the issue
was resolved by adding a 

Ringing() followed by 
Wait(1) 

before the VoicemailMain() in the dial plan... it seems like there should be
a better way, and I feel it's rather crude to force the user to listen to a
second of ringback before launching into voicemail, but it solved the
problem for me (and yes, I did try just Ringing() with no wait with no such
luck)  -- maybe it would work in your case with a SIP call as well? 

HTH,

Lincoln 

-- 
Lincoln King-Cliby, CTS
Applications Engineer 
ControlWorks Consulting, LLC
V: 440.729.4640 x1107 | F: 440.729.0884 | I:http://www.thecontrolworks.com/ 
Crestron Authorized Independent Progammers

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Roman Odaisky
Sent: Friday, March 13, 2009 11:38 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] No reply to our critical packet

Hi,

thanks for the quick reply.

> 1. Do you have the incoming 10000-20000 holes in your firewall so the
> remote server can get it's reply back to *?

This was what I checked first. Both firewalls let everything through.

> 2. If #1 is ok, try putting an Answer command in front of your Dial
> Command.

Doesn't help, alas. Also, it works the same (disconnect after 20 seconds)
both 
for Dial and Echo, regardless of presence of Answer.

-- 
TIA
Roman.

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