[bdNOG] Call Center Voice quality improve in public internet and call center security
Palash Kanti Barua
palash at bol-online.com
Mon Nov 18 18:00:20 BDT 2013
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 <tel:%2B8801745724242> .
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