[bdNOG] Call Center Voice quality improve in public internet and call center security
Suvra Dev Kar
eng.suvra at gmail.com
Mon Nov 18 18:11:31 BDT 2013
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.
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