[bdNOG] Call Center Voice quality improve in public internet and call center security

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Dear Anirudda Da,

Thanks for your mail. If I'm wrong I think you are asking how bandwidth can
be controlled in large level.

I have a very small experience in IIG. We do the bandwidth shaping in
physical level as port basis. We don't do anything on Packet level as like
Roman Vai said. But, all our cards are QUE cards. These QUE cards are very
expensive, but it will give you a very good result on shaping bandwidth at
the port. If you have more than 1gbps of Bandwidth to serve, I think you
can use Aggregated Ethernet (AE). Better to use 80% efficiency for each
port.

For Packet Shaping, I have a very worst experience on JUNIPER IDP 8200,
which is a 10GE transparent DPI. It should give us so many options to
control the packets, like blocking, passing etc. But, truly speaking your
browsing experience will be too much worst and when we crossed 1 gbps of
bandwidth it crashed and JUNIPER send a new one.

- SIMON.


On Wed, Nov 20, 2013 at 7:15 PM, Nurul Islam Roman <nurul at apnic.net> wrote:

>  Transit operators normally do not shape traffic (bandwidth control) at
> packet level. Except some rate limiting for ICMP etc etc destine to their
> origin IP only. They normally control data rate at the signal level I.e.
> DSL, Ethernet, STM etc. So at the packet level there is no issue as long as
> their interface queue (depend on hardware capacity) can handle those.
>
>  Transit path main goal is clear IP packet, no shaping, their routers
> don't even check what QoS tag each packet is carrying. If you need any
> exception it need to be done case by case with your transit operator/s.
>
>  Regards
>
>  -R
>
>   From: Aniruddha Barua <aniruddha.barua at colbd.com>
> Date: Wednesday, 20 November 2013 10:31 PM
> To: "Simon Sohel Baroi / IIG-ITC / Sr.Manager / 01678618243 /" <
> simon.baroi at fiberathome.net>
> Cc: "nog at bdnog.org" <nog at bdnog.org>
>
> Subject: Re: [bdNOG] Call Center Voice quality improve in public internet
> and call center security
>
>   Dear Simon bhai,
>
>  I am not asking for our network. I am asking from learning point of
> view. ISPs like us use Allot, Packeteer, ET, MikroTik etc. I was wondering
> what the carriers/transit providers might use to shape up QoS for IP
> traffic (VoIP, IP Telephony, Video etc.). International calls pass through
> one or more of these transit networks. If end to end QoS has to be ensured
> along the path, transit providers will have to use such an equipment at IP
> level. I feel, at Gigabit speeds, shaping up traffic without compromising
> performance should be extremely difficult. I think, from transit
> providers' point of view, IPLC is the best option for best QoS but I
> might be wrong. Inputs from the experts in this list are welcome.
>
>  Regards,
>
>   ANIRUDDHA BARUA
> Email: aniruddha.barua at colbd.com, cto at colbd.com
>
>
> On Nov 20, 2013, at 2:22 PM, "Simon Sohel Baroi / IIG-ITC / Sr.Manager /
> 01678618243 /" <simon.baroi at fiberathome.net> wrote:
>
>    Dear Aniruddha Da,
>
>  Can you please explain where you want to use this equipment. Are you want
> to use it in your ISP to serve client and control them from a central point.
>
>  Please let us know a bit of details about it.
>
>  - with regards
>
> SIMON
>  FiBER at HOME.
>
>
> On Wed, Nov 20, 2013 at 2:06 PM, Aniruddha Barua <
> aniruddha.barua at colbd.com> wrote:
>
>> Hello everyone,
>>
>> Relating to this thread, I'd like to know if there is any equipment that
>> can shape up QoS traffic without affecting Non-QoS traffic at carrier
>> networks where bandwidth is in hundreds of Mbps to tens of Gbps.
>>
>> Regards,
>>
>> ANIRUDDHA BARUA
>> Email: aniruddha.barua at colbd.com, cto at colbd.com
>>
>>
>> *---------- Original Message -----------*
>> From: Suvra Dev Kar <eng.suvra at gmail.com>
>> To: Palash Kanti Barua <palash at bol-online.com>
>> Cc: nog at bdnog.org
>>  Sent: Mon, 18 Nov 2013 18:11:31 +0600
>> Subject: Re: [bdNOG] Call Center Voice quality improve in public internet
>> and call center security
>>
>> > Dear Mr. Palash,
>> >
>> > Yes , you  are  right,  Provider  never  can  give  us  this  stats.
>> thats why maximum time  get  voice  break  issue.  SP can not ensure  QoS.
>> > you know any  good  vendor.
>> >
>> > Best Regards
>> > Suvro.
>> >
>> > On Mon, Nov 18, 2013 at 6:00 PM, Palash Kanti Barua <
>> palash at bol-online.com> wrote:
>> >
>>>
>>>
>>> >
>>> > Dear Mr. Shuvro,
>>> >
>>> > You can ask your SP to ensure the following requirements for good
>>> voice quality.
>>> >
>>> > 1)     Packet * Loss* should be no more than *1%* between source and
>>> destination
>>> > 2)     One-way * Latency* (mouth-to-ear) should be no more than *150*ms
>>> > 3)     Average one-way *Jitter* should be targeted under *30* ms
>>> >
>>> > If you use Ethernet connection and G.729 at 50 pps with 20 ms
>>> sampling rate, you need at least 37 kbps bandwidth for each call. Please
>>> correct me if I am wrong.
>>> >
>>> >
>>> > Regards,
>>> > Palash
>>> > BOL
>>> >
>>> > *From:* Suvra Dev Kar [mailto:eng.suvra at gmail.com]
>>> > *Sent:* Monday, November 18, 2013 3:51 PM
>>> > *To:* Md Zahidul Haque
>>> > *Cc:* Jahangir Hossain; Palash Kanti Barua; nog at bdnog.org
>>> >
>>> > *Subject:* Re: [bdNOG] Call Center Voice quality improve in public
>>> internet and call center security
>>> >
>>> >
>>> >
>>> > Dear  Team  Member,
>>> > Thanks For your  Suggestion. I know voice  quality can not  improve
>>> using  any firewall. firewall and  voice  quality is  both are different. i
>>> saw if  network  any  firewall have  which  is  create  problem for  voice
>>> termination.  but  firewall is  important to  secure the network. i want
>>> to  know any  device which  can  support voice  termination.
>>> > and  for  voice  quality issue i  am not interest to  get  IPLC,
>>> without  IPLC how  i can  get  good  voice  quality from  public  internet
>>> in  Bangladesh. any one have any  Band width which  can  defer voice
>>> traffic  and  data  traffic  when it is  going  through any  pipe link. coz
>>> voice  traffic  will be  priority in  public  internet, how  i can   do
>>> this, or  who can give  this  type  of  service.,
>>> >
>>> >
>>> > and  thanks  to  roman bhai, that  for  voice termination workshop
>>> agenda,. It is  very  important for  Bangladesh.
>>> >
>>> > FOr  routing we  are  using  Tier 1 provider. for  compression we
>>> are  using  20 ms payload size for  g729 call.
>>> >
>>> >
>>> >
>>> >
>>> > Best Regards
>>> > Suvro
>>> > Helloworld Communication Ltd.
>>> >
>>> >
>>> >
>>> > On Mon, Nov 18, 2013 at 11:35 AM, Md Zahidul Haque <zahid at zhaque.net>
>>> wrote:
>>> >
>>> > Palash vai is absolutely right.
>>> > There are lots of other factor like BW, Compression mechanism,
>>> routing mechanism etc. that can cause the poor quality of voice.
>>> >
>>> > Zahidul Haque
>>> > HRC IGW
>>> >
>>> > *From:* nog-bounces at bdnog.org [mailto:nog-bounces at bdnog.org] *On
>>> Behalf Of *Jahangir Hossain
>>> > *Sent:* Monday, November 18, 2013 11:13 AM
>>> > *To:* Palash Kanti Barua
>>> > *Cc:* nog at bdnog.org
>>> > *Subject:* Re: [bdNOG] Call Center Voice quality improve in public
>>> internet and call center security
>>> >
>>> >
>>> >
>>> > 1+ palash bhai.
>>> >
>>> >
>>> >
>>> > Regards  //  Jahangir Hossain
>>> >
>>> >                   Open Communication
>>> >
>>> >
>>> > On Mon, Nov 18, 2013 at 11:08 AM, Palash Kanti Barua <
>>> palash at bol-online.com> wrote:
>>> > Dear Mr. Suvro,
>>> >
>>> > Your voice traffic is passing from source to destination and vice
>>> versa
>>> > using different carriers' network. So, it would be really difficult to
>>> > ensure End-to-End voice quality over the Internet. No one will
>>> guarantee for
>>> > it. Still IPLC is the best solution for it though it is quite costly.
>>> There
>>> > is one alternative solution is to get international MPLS connectivity
>>> if any
>>> > SP can provide you the same in BD. As far as I know, there is no
>>> firewall
>>> > device or software which can improve the voice quality over the
>>> internet.
>>> >
>>> > Regards,
>>> > Palash Kanti Barua
>>> > BOL
>>> >
>>> > -----Original Message-----
>>> > From: nog-bounces at bdnog.org [mailto:nog-bounces at bdnog.org] On Behalf
>>> Of
>>> > Suvra Dev Kar
>>> >
>>> > Sent: Monday, November 18, 2013 12:41 AM
>>> > To: nog at bdnog.org
>>> > Subject: [bdNOG] Call Center Voice quality improve in public internet
>>> and
>>> > call center security
>>> >
>>> > Dear BD  nog Team member,
>>> >
>>> > I  am suvro  from Hello world communications ltd.  we  are
>>> international
>>> > call center, we  are  using  voice  termination  through  public
>>> internet,
>>> > maximum time we  face  voice quality issue. Now  can  you tel me  any
>>> one
>>> > how  i  can get  good  voice  quality  from public  internet. we  are
>>>  not
>>> > using  IPLC  coz  its costly. and tel me for  call center and  voice
>>> > termination  which  firewall  device or  software i can  use.
>>> >
>>> > Best Regards
>>> > Suvro Dev
>>> > Hello world communications Ltd
>>> > cell- +8801745724242.
>>> > _______________________________________________
>>> > nog mailing list
>>> > nog at bdnog.org
>>> > http://mailman.bdnog.org/mailman/listinfo/nog
>>> >
>>> > _______________________________________________
>>> > nog mailing list
>>> > nog at bdnog.org
>>> > http://mailman.bdnog.org/mailman/listinfo/nog
>>> >
>>> >
>>>
>>> > --
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > nog mailing list
>>> > nog at bdnog.org
>>> > http://mailman.bdnog.org/mailman/listinfo/nog
>>> >
>>
>>
>>  *------- End of Original Message -------*
>>
>> _______________________________________________
>> nog mailing list
>> nog at bdnog.org
>> http://mailman.bdnog.org/mailman/listinfo/nog
>>
>>
>
>
> --
> *Simon Sohel Baroi  *|  Sr. Manager, Technology  |  PICO  |   ITC - IIG  |
> Cell : +880-1678-618243, +880-181-7022207  |  Desk : +880-9666776677
> Ext-1031  |
> Mail : simon.baroi at pico.net.bd <simon.baroi at fiberathome.net>  |  Skype :
> tx.fttx  |
>
>
> * Reduce. Reuse. Recycle. Respect. It's the little things that really can
> make a difference. *
>
>
> _______________________________________________
> nog mailing list
> nog at bdnog.org
> http://mailman.bdnog.org/mailman/listinfo/nog
>
>


-- 
*Simon Sohel Baroi  *|  Sr. Manager, Technology  |  PICO  |   ITC - IIG  |
Cell : +880-1678-618243, +880-181-7022207  |  Desk : +880-9666776677
Ext-1031  |
Mail : simon.baroi at pico.net.bd <simon.baroi at fiberathome.net>  |  Skype :
tx.fttx  |


* Reduce. Reuse. Recycle. Respect. It's the little things that really can
make a difference. *
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