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[brent at texascountryt...]

Is there some location that outlines the major differences between
Asterisk version 1.4 and version 1.6? I've read through change logs and
several technical discussions, but technical details don't really give
me the big picture. Basically, is 1.6 more stable than 1.4? Is it more
efficient? Does it work better with echo cancelers like Oslec? I'm
currently using Asterisk as a PBX for our branch offices and will soon
be converting our main office. Our goal is to be able to have 2 analog
lines at each office, calls come in to each PBX and are routed by VOIP
to a receptionist at one of the offices who then routes calls
appropriately. We're currently using Asterisk 1.4.19, Zaptel 1.4.10,
Oslec SVN, Rhino R4FXO-EC cards, and Snom 300 Phones. All of our
branch offices have 1MBPS DSL connections and are linked to each other
by VPN's running on our Cisco 1720 routers. Our only problem so far is
with intermittent echo on calls. Most of the calls have a little echo
right at first, but it goes away almost immediately as the echo canceler
trains. Every now and then, however, we get a call with terrible echo.
I've put in several e-mails to rhino support asking if the hardware echo
canceler needs something I haven't done but didn't get a response. I
know echo is just something we have deal with when using analog lines,
but I didn't think it would be this big of a problem. All of our
offices are in rural areas where digital lines are unavailable so that
is not an option.

Given this setup, is there any reason for me to switch to Asterisk 1.6
or should I stick with 1.4?

Thanks,
Brent Davidson

[davies147 at gmail.com]

2008/6/4 Brent Davidson <brent at texascountrytitle.com>:
[snip]

[mwatson at becon.org]

Have you tuned rxgain & txgain in Zapata.conf? <shameless-self-plug> http://www.mattgwatson.ca/2008/05/howto-tune-zaptel-dahdi-fxo-interfaces-on-asterisk-pbx/ </plug>

Also, have you used fxotune to tune each FXO interface?

I believe echo cancellation happens at the Zaptel / DAHDI level, so using Asterisk 1.6 probably isn't going to give you any benefit.
--
Matt Watson
http://www.mattgwatson.ca


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Brent Davidson
Sent: Wednesday, June 04, 2008 11:52 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Asterisk 1.6 vs 1.4?

Is there some location that outlines the major differences between
Asterisk version 1.4 and version 1.6? I've read through change logs and
several technical discussions, but technical details don't really give
me the big picture. Basically, is 1.6 more stable than 1.4? Is it more
efficient? Does it work better with echo cancelers like Oslec? I'm
currently using Asterisk as a PBX for our branch offices and will soon
be converting our main office. Our goal is to be able to have 2 analog
lines at each office, calls come in to each PBX and are routed by VOIP
to a receptionist at one of the offices who then routes calls
appropriately. We're currently using Asterisk 1.4.19, Zaptel 1.4.10,
Oslec SVN, Rhino R4FXO-EC cards, and Snom 300 Phones. All of our
branch offices have 1MBPS DSL connections and are linked to each other
by VPN's running on our Cisco 1720 routers. Our only problem so far is
with intermittent echo on calls. Most of the calls have a little echo
right at first, but it goes away almost immediately as the echo canceler
trains. Every now and then, however, we get a call with terrible echo.
I've put in several e-mails to rhino support asking if the hardware echo
canceler needs something I haven't done but didn't get a response. I
know echo is just something we have deal with when using analog lines,
but I didn't think it would be this big of a problem. All of our
offices are in rural areas where digital lines are unavailable so that
is not an option.

Given this setup, is there any reason for me to switch to Asterisk 1.6
or should I stick with 1.4?

Thanks,
Brent Davidson

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[rob at hillis.dyndns.org]

Brent Davidson wrote:

[tzafrir.cohen at xorco...]

On Thu, Jun 05, 2008 at 03:00:01AM +1000, Rob Hillis wrote:

[rob at hillis.dyndns.org]

Tzafrir Cohen wrote:

[brent at texascountryt...]

Tzafrir Cohen wrote:

[brent at texascountryt...]

Matt Watson wrote:

[brent at texascountryt...]

Just an update. I tried updating to the newest Rhino Release firmware
1.15 and newest stable driver version 2.2.6. It works OK with
zaptel-1.4.9.2 and compiles OK with 1.4.10.1 but when compiled against
zaptel 1.4.10.1 Asterisk does not see any zap channels. I'm currently
running one branch office with the upgraded firmware, driver,
zaptel-1.4.9.2 and Asterisk-1.4.20.1. I'll see how everything goes
there and may upgrade the other offices if it works OK.

Thanks,
Brent

[tzafrir.cohen at xorco...]

On Thu, Jun 05, 2008 at 03:40:14AM +1000, Rob Hillis wrote:

[rob at hillis.dyndns.org]

Tzafrir Cohen wrote:

[tzafrir.cohen at xorco...]

On Thu, Jun 05, 2008 at 09:28:52PM +1000, Rob Hillis wrote:

[rizwanhasham at gmail.com]

Brent, hope your problems go away soon.

I am actually interested in the topic of this post. Ast 1.6 vs 1.4. We are
using asterisk 1.4.2 for a SIP only based configuration. Currently we have
about 200 SIP users which can cause approximately upto 3 simultaneous calls.
We are mainly concerned about the performance and stability of asterisk when
the load increases. Our server can handle about 100 simultaneous calls
having 3Ghz Dual Intl-Xeon Processor with 2GB of ram using G711 codec, and
around 30 simultanoeus calls using G729 codec. This we are expecting from
the hardware. We are planning to accomodate about 5,000 users on this
server.

Before the release of 1.6 i heard that its architecture is going to be
different from 1.2 and 1.4. Recently i read an article about
freeswitch<http://freeswitch.org/node/117>,
which explains how its functionality is like asterisk but it can perform
better than asterisk due to its architectural differences. The main
developer for freeswitch is anthony who also codes for asterisk. He
explaines why the architecture of asterisk needs to be changed which
requires massive recoding, but nobody took the step to do it. Thats why he
started freeswitch on his own to redifine the architecture, so that the
performance and reliability of the switch should be better than asterisk. In
his article he has already said that freeswitch beats asterisk by a factor
of 10.

If asterisk architecture is being rewritten in 1.6 to achive the same goal,
then we will be happy to use 1.6 instead of shifting the whole system to
freeswitch. We dont have any problem or issues with 1.4.2 yet. We are mainly
concerned about the its performance when the load increases. If 1.6 is more
reliable under heavy loads then we would like to use it.

If anyone can put some light on this topic, all i can say is thanx for
sharing your thaughts and experiences.

On Thu, Jun 5, 2008 at 1:13 AM, Brent Davidson <brent at texascountrytitle.com>
wrote:

[klitzing at pool.infor...]

Hi!

[brent at texascountryt...]

Philipp von Klitzing wrote: