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

Thu Nov 21 08:13:33 BDT 2013

Dear Aniruddha Da,

Thanks and I understood.

But please help me about my below query about QoS, valuable replies will
help me in my current project:

"Qos is required for Voice and Video all the times?" OR "QoS is required
when network is congested?"

Regards, Farid

-----Original Message-----
From: Aniruddha Barua [mailto:aniruddha.barua at colbd.com] 
Sent: 21-Nov-2013 01:36 AM
To: 'Nurul Islam Roman'; 'Simon Sohel Baroi / IIG-ITC / Sr.Manager /
01678618243 /'; Md. Faridul Alam | Aamra
Cc: nog at bdnog.org
Subject: RE: [bdNOG] Call Center Voice quality improve in public internet
and call center security

Dear Farid bhai,

Any agreement is made when all terms and conditions are agreed upon by the
concerned parties. If the terms and conditions cannot be agreed upon, then
there can be no agreement no matter whoever says whatever, let alone I. I
only suggested it. I should have written it like this "Go for SLA with the
SP if applicable". Missed the "if applicable" part. I hope you understand
now.:-)

Best regards,

ANIRUDDHA BARUA

Email:  <mailto:aniruddha.barua at colbd.com> aniruddha.barua at colbd.com,
<mailto:cto at colbd.com> cto at colbd.com

---------- Original Message -----------

From: "Md. Faridul Alam | Aamra" < <mailto:faridul.alam at aamra.com.bd>
faridul.alam at aamra.com.bd>

To: "'Aniruddha Barua'" < <mailto:aniruddha.barua at colbd.com>
aniruddha.barua at colbd.com>, "'Simon Sohel Baroi / IIG-ITC / Sr.Manager /

01678618243 /'" < <mailto:simon.baroi at fiberathome.net>
simon.baroi at fiberathome.net>, "'Nurul Islam Roman'" <
<mailto:nurul at apnic.net> nurul at apnic.net>

Cc: < <mailto:nog at bdnog.org> nog at bdnog.org>

Sent: Thu, 21 Nov 2013 00:34:19 +0600

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

> Dear Aniruddha Da,

> I'm NOT clear about "SLA with the SP". Please help understand this. 

> 

> And what will be basic parameters of this types of SLA. SP can provide 

> the best route to any

customer based on destination and lowest latency and it is suitable when
destination is fixed or known. 

> But, as I assume, for call canter, calling destination and call 

> originating source is ANY. In that

case, how SP can provide suitable solution. 

> But I believe, there might be others technique. Please share for our
understanding. 

>    

>    

> Regards, Farid

> 

> From:  <mailto:nog-bounces at bdnog.org> nog-bounces at bdnog.org [
<mailto:nog-bounces at bdnog.org> mailto:nog-bounces at bdnog.org] On Behalf 

> Of Aniruddha Barua

> Sent: 21-Nov-2013 12:16 AM

> To: Simon Sohel Baroi / IIG-ITC / Sr.Manager / 01678618243 /; Nurul 

> Islam Roman

> Cc:  <mailto: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, Roman bhai and other members,

> 

> Thanks for your emails. I kind of predicted it right. The more we go 

> towards the core of global

Internet, the less (or none as you've confirmed) bandwidth management &
traffic shaping we see. 

> 

> Actually I am not asking anything for our network. Our current total 

> bandwidth is 300 Mbps

(through 4 IIGs) and we are doing fine with our current bandwidth management
mechanism. Besides we do not have any Call Center as our customer at the
moment. Some of our corporate customers use International Video Conferencing
(BTRC authorized of course) among multiple countries simultaneously. They
never reported any performance issue. 

> 

> I was looking at the original issue posted by Mr. Suvro Dev in a 

> larger view. Let's see this,

> 

> 

OrigSite----ISP----UpstreamISP----TransitProv----TransitProv----TransitProv-
----UpstreamISP----ISP----TermSite

> 

> A typical end-to-end path looks more or less like above where traffic 

> shaping is taking place at

ISP and/or UpstreamISP. If there is any bottleneck in any of the
TransitProvs, then ISPs and UpstreamISPs will have to escalate the issue to
concerned TransitProv. My experience tells that unless there is a DoS/DDoS
attack, most of the time the bottleneck will go away on its own by the time
(or even long before) the TransitProvs get the message. 

> 

> As far as ISP/UpstreamISP of TermSite (i.e. Hello World Comm. Ltd. 

> here) is concerned, Mr. Suvro

can take the advices of the experts and seniors earlier in this mailing
list, esp. Palash Da's advices. Go for an SLA with the SP. 

> 

> Regarding Simon bhai's experience with Juniper device, I just remembered a
quote by Sir W.

Churchill, "If you place over 10,000 regulations, you ultimately destroy all
respect for the law."

The packets rebelled against the thousands of featured regulations of
Juniper and destroyed it. ;-) 

> 

> Best regards,

> 

> ANIRUDDHA BARUA

> Email:  <mailto:aniruddha.barua at colbd.com> aniruddha.barua at colbd.com,
<mailto:cto at colbd.com> cto at colbd.com

> 

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