PDA

View Full Version : Slimserver and VOIP



crapulent
2005-04-11, 22:57
Hi, had an odd thing today, I was streaming radio and using BroadVoice at the same time. It was probably a fluke, but I would have around 2 minutes plus of phone time and the VOIP would poop out. It happened 3 times before I stopped the streaming radio.

FLMike
2005-04-12, 05:46
Crapulent,
Since you were streaming radio at the same time, it was probably an issue
with the bandwidth of your internet connection or jitter rather than an
issue with Server or the SB.

Mike
----- Original Message -----
From: "crapulent" <crapulent.1nd31z (AT) no-mx (DOT) forums.slimdevices.com>
To: <discuss (AT) lists (DOT) slimdevices.com>
Sent: Tuesday, April 12, 2005 1:57 AM
Subject: [slim] Slimserver and VOIP


>
> Hi, had an odd thing today, I was streaming radio and using BroadVoice
> at the same time. It was probably a fluke, but I would have around 2
> minutes plus of phone time and the VOIP would poop out. It happened 3
> times before I stopped the streaming radio.
>
>
> --
> crapulent
>

jmpage2
2005-04-12, 09:55
Hi, had an odd thing today, I was streaming radio and using BroadVoice at the same time. It was probably a fluke, but I would have around 2 minutes plus of phone time and the VOIP would poop out. It happened 3 times before I stopped the streaming radio.

You need to setup and use QoS to prioritize your VoIP packets above everything else on both your WAN and LAN connections if you want your VoIP to always have top priority on the network and the broadband connection.

VoIP is extremely susceptible to contention which can cause latency and packet loss. If you use a VoIP coder in the same PC as the Slim Server then that process also needs to be given higher priority than the Slim process.

Nick Silberstein
2005-04-12, 12:18
crapulent wrote:
> Hi, had an odd thing today, I was streaming radio and using BroadVoice
> at the same time. It was probably a fluke, but I would have around 2
> minutes plus of phone time and the VOIP would poop out. It happened 3
> times before I stopped the streaming radio.

There are a number of cheap home routers that incorporate QoS (Quality
of Service) that can sit between your DSL/cable "modem" and ensure that
real-time traffic (like VoIP) gets the priority it needs.

The reality is, though, that many home connections have a woeful lack of
upstream bandwidth, and that you might be in an "either or" situation.
That is, either VoIP or streaming audio will be affected if you do both
simultaneously, even with QoS.

Nick

--
Nick Silberstein
Senior Developer
Flying Machine Development, Inc.

--
---------------------[ Ciphire Signature ]----------------------
From: nick (AT) flyingmachine (DOT) com signed email body (661 characters)
Date: on 12 April 2005 at 19:18:01 UTC
To: discuss (AT) lists (DOT) slimdevices.com
----------------------------------------------------------------
: Ciphire has secured this email against identity theft.
: Free download at www.ciphire.com. The garbled lines
: below are the sender's verifiable digital signature.
----------------------------------------------------------------
00fAAAAAEAAADpHlxClQIAALkCAAIAAgACACBRCuDHfCdm7ojb WrVhWB44/cegOe
DWtrFRCXrR09PKXAEAGuut/XGiY4yti+yDQ84APzXWLkDhVdPVVl1QhSpeVH2uQZ
TrDt+TLAsjkZp7QhFGHeqvNmnFYzPbFVfP5DrcBw==
------------------[ End Ciphire Signed Message ]----------------

crapulent
2005-04-12, 20:45
I appreciate the responses. Do you think I could use a QoS server as
an Asterisk server? I know this is way beyond Slim stuff. But one
thing I wanted to do on VOIP is use Slimserver for music on hold, and
I guess I need an Asterisk for my device, it's a Simpura 2100.

On 4/12/05, Nick Silberstein <nick (AT) flyingmachine (DOT) com> wrote:
> crapulent wrote:
> > Hi, had an odd thing today, I was streaming radio and using BroadVoice
> > at the same time. It was probably a fluke, but I would have around 2
> > minutes plus of phone time and the VOIP would poop out. It happened 3
> > times before I stopped the streaming radio.
>
> There are a number of cheap home routers that incorporate QoS (Quality
> of Service) that can sit between your DSL/cable "modem" and ensure that
> real-time traffic (like VoIP) gets the priority it needs.
>
> The reality is, though, that many home connections have a woeful lack of
> upstream bandwidth, and that you might be in an "either or" situation.
> That is, either VoIP or streaming audio will be affected if you do both
> simultaneously, even with QoS.
>
> Nick
>
> --
> Nick Silberstein
> Senior Developer
> Flying Machine Development, Inc.
>
> --
> ---------------------[ Ciphire Signature ]----------------------
> From: nick (AT) flyingmachine (DOT) com signed email body (661 characters)
> Date: on 12 April 2005 at 19:18:01 UTC
> To: discuss (AT) lists (DOT) slimdevices.com
> ----------------------------------------------------------------
> : Ciphire has secured this email against identity theft.
> : Free download at www.ciphire.com. The garbled lines
> : below are the sender's verifiable digital signature.
> ----------------------------------------------------------------
> 00fAAAAAEAAADpHlxClQIAALkCAAIAAgACACBRCuDHfCdm7ojb WrVhWB44/cegOe
> DWtrFRCXrR09PKXAEAGuut/XGiY4yti+yDQ84APzXWLkDhVdPVVl1QhSpeVH2uQZ
> TrDt+TLAsjkZp7QhFGHeqvNmnFYzPbFVfP5DrcBw==
> ------------------[ End Ciphire Signed Message ]----------------
>
>

crapulent
2005-04-12, 22:39
Updated the firmware on my router, now have QoS settings.

On 4/12/05, Jonathan Miller <crapulent (AT) gmail (DOT) com> wrote:
> I appreciate the responses. Do you think I could use a QoS server as
> an Asterisk server? I know this is way beyond Slim stuff. But one
> thing I wanted to do on VOIP is use Slimserver for music on hold, and
> I guess I need an Asterisk for my device, it's a Simpura 2100.
>
> On 4/12/05, Nick Silberstein <nick (AT) flyingmachine (DOT) com> wrote:
> > crapulent wrote:
> > > Hi, had an odd thing today, I was streaming radio and using BroadVoice
> > > at the same time. It was probably a fluke, but I would have around 2
> > > minutes plus of phone time and the VOIP would poop out. It happened 3
> > > times before I stopped the streaming radio.
> >
> > There are a number of cheap home routers that incorporate QoS (Quality
> > of Service) that can sit between your DSL/cable "modem" and ensure that
> > real-time traffic (like VoIP) gets the priority it needs.
> >
> > The reality is, though, that many home connections have a woeful lack of
> > upstream bandwidth, and that you might be in an "either or" situation.
> > That is, either VoIP or streaming audio will be affected if you do both
> > simultaneously, even with QoS.
> >
> > Nick
> >
> > --
> > Nick Silberstein
> > Senior Developer
> > Flying Machine Development, Inc.
> >
> > --
> > ---------------------[ Ciphire Signature ]----------------------
> > From: nick (AT) flyingmachine (DOT) com signed email body (661 characters)
> > Date: on 12 April 2005 at 19:18:01 UTC
> > To: discuss (AT) lists (DOT) slimdevices.com
> > ----------------------------------------------------------------
> > : Ciphire has secured this email against identity theft.
> > : Free download at www.ciphire.com. The garbled lines
> > : below are the sender's verifiable digital signature.
> > ----------------------------------------------------------------
> > 00fAAAAAEAAADpHlxClQIAALkCAAIAAgACACBRCuDHfCdm7ojb WrVhWB44/cegOe
> > DWtrFRCXrR09PKXAEAGuut/XGiY4yti+yDQ84APzXWLkDhVdPVVl1QhSpeVH2uQZ
> > TrDt+TLAsjkZp7QhFGHeqvNmnFYzPbFVfP5DrcBw==
> > ------------------[ End Ciphire Signed Message ]----------------
> >
> >

jmpage2
2005-04-13, 08:02
Did the QoS implementation help?

As far as Asterisk goes I don't know anything about it, other than that it's a small "freeware" VoIP PBX competitor that claims to have the same features that my company has spent 20 years developing to put into our products. I'm sure it's neat but I'm a little skeptical as to the features/reliability claims, especially for large installations (our systems scale to 30,000 endpoints).

Nick Silberstein
2005-04-13, 12:26
jmpage2 wrote:
> As far as Asterisk goes I don't know anything about it, other than that
> it's a small "freeware" VoIP PBX competitor that claims to have the same
> features that my company has spent 20 years developing to put into our
> products. I'm sure it's neat but I'm a little skeptical as to the
> features/reliability claims, especially for large installations (our
> systems scale to 30,000 endpoints).

This is definitely drifting into OT territory. But hey, so is 90% of
the traffic on this list, so :)

Asterisk works quite nicely and, in addition to home offices, small and
medium sized "normal" businesses, is used by a number of call centers
with high volume (going by posts to the Asterisk users mailing lists).

It's "freeware" in that it's free of cost; more importantly, it's
licensed under the GNU GPL, just like Slimserver. Digium, the primary
sponsors of Asterisk, have a very similar business model to Slim
Devices. They give away the software, and hope to sell hardware (see
http://www.digium.com/).

While I am not a large installation, Asterisk works great for me, and
you can't beat the price if you have inhouse Linux/technical skills
avilable. Feature-wise it seems very rich to me, but like I said, I
can't speak to reliability for large installations. But, I suspect
Jonathan Miller and most of the potential user base doesn't need to
scale to 30,000 endpoints.

Most PBX solutions out there are proprietary, so the wheel is
re-invented by each company producing them. Asterisk has seem a lot of
features contributed by third-parties who didn't have to re-invent the
while, they just slapped a bit of tread on it.

Nick

--
Nick Silberstein
Senior Developer
Flying Machine Development, Inc.

--
---------------------[ Ciphire Signature ]----------------------
From: nick (AT) flyingmachine (DOT) com signed email body (1426 characters)
Date: on 13 April 2005 at 19:26:25 UTC
To: discuss (AT) lists (DOT) slimdevices.com
----------------------------------------------------------------
: Ciphire has secured this email against identity theft.
: Free download at www.ciphire.com. The garbled lines
: below are the sender's verifiable digital signature.
----------------------------------------------------------------
00fAAAAAEAAABhcl1CkgUAAIYCAAIAAgACACBRCuDHfCdm7ojb WrVhWB44/cegOe
DWtrFRCXrR09PKXAEAGuut/XGiY4yti+yDQ84APzXWLkDhVdPVVl1QhSpeVH1+UO
ZMgVOSOy44aGRACl6pQPxRCJVleNzwNQB2lpM53w==
------------------[ End Ciphire Signed Message ]----------------

crapulent
2005-04-13, 20:37
QoS on the router has helped quite a bit. I must say I've been more
than happy with the "freeware" Slimserver, so I expect a similar
experience with Asterisk.