Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.



1 post

Wannabe Geek


Topic # 90842 30-Sep-2011 18:36 Send private message

The organisation I am assisting wants an 'outward' call centre of 6 phones and suggested using VOIP on mobile broadband. Required for two months only (ie up to election day). I did some sums and it seems feasible on paper, but I have a gut feeling there has to be a 'catch' somewhere. Other option would be naked ADSL2+ , any idea how many VOIP's could work on this assuming fairly favourable circumstances. We would need quality to be a bit better than a Manila boiler-room operation.

Create new topic
16241 posts

Uber Geek
+1 received by user: 1241

Trusted
Vodafone NZ

  Reply # 527815 30-Sep-2011 18:40 Send private message

There is no QoS for voice packets on mobile broadband if you have issues no carrier is going to offer you support

John




3bit.com
5850 posts

Uber Geek
+1 received by user: 155

Moderator
Trusted
Subscriber

  Reply # 527824 30-Sep-2011 19:14 Send private message

Latency will be too high on mobile bb. 




2978 posts

Uber Geek
+1 received by user: 175

Trusted
Subscriber

  Reply # 527837 30-Sep-2011 19:47 Send private message

No way you would run that over mobile broadband. probably best to sign up to something like Xnet naked DSL and use their VOIP service as its zero rated. Also you will probably need to use g729 for the codec to support that many calls on ADSL2 due to the slow upload speed. Could run VDSL2 if you want g722 or g711





19418 posts

Uber Geek
+1 received by user: 1263

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 527898 30-Sep-2011 22:55 Send private message

Forget it over mobile. End of story.


Have plan, send $NZD50m
3475 posts

Uber Geek
+1 received by user: 75

Subscriber

  Reply # 528005 1-Oct-2011 13:27 Send private message

OP you need to budget ~85k per concurrent connection if you use the 711a codec in my experience.

If you use 729(?) then you should get away with less in theory.

Personally I don't try to push the envelop, and I just use 711a.

If you're thinking about using mobile data then you need to do a proper proof of concept at the given location to see how well it works. Remember, if lots of people turn up using their mobile phones at the same time then you're sharing the network capacity with them. Ie: you do your testing with no staff, your staff show up with 6 phones... see where this is going?

The DSL2+ does seem like the smarter option.

You will also need to test the DSL to ensure that at the given location, with the chosen ISP, you can get the throughput that you need. Just because your modem says it's syncing at xxx doesn't mean you can push the data.

You also need to make sure that nothing else using your DSL drowns your phone data.

HTH.





Promote New Zealand - Get yourself a .kiwi.nz domain name!!!

Check out mine - i.am.a.can.do.kiwi.nz - [email protected]


19418 posts

Uber Geek
+1 received by user: 1263

Moderator
Trusted
Biddle Corp
Subscriber

  Reply # 528009 1-Oct-2011 13:46 Send private message

DonGould: OP you need to budget ~85k per concurrent connection if you use the 711a codec in my experience.



That's per channel, and two channels make up a call.

I'd never attempt to support 6 concurrent ulaw or alaw call across ADSL2+, it may work, but you're cutting things very fine for a best effort service. The best bet is to install HSNS.






Have plan, send $NZD50m
3475 posts

Uber Geek
+1 received by user: 75

Subscriber

  Reply # 528028 1-Oct-2011 15:42 Send private message

sbiddle: That's per channel, and two channels make up a call.

I'd never attempt to support 6 concurrent ulaw or alaw call across ADSL2+, it may work, but you're cutting things very fine for a best effort service. The best bet is to install HSNS.


Sorry I don't understand the 2 channels comment.

I just watch my usage meter and see it's using ~85k.  Are you saying it should be using 170k for a phone call?

That would mean d2+ will only deal with 3 concurrent calls at most wouldn't it?

HSNS - ouch... might be cheaper to run POTS or ISDN in?






Promote New Zealand - Get yourself a .kiwi.nz domain name!!!

Check out mine - i.am.a.can.do.kiwi.nz - [email protected]


Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Does NZ need better gun laws?
Created by mattwnz, last reply by hangon on 3-Sep-2014 17:54 (165 replies)
Pages... 9 10 11


Warning: Rage Ahead - Campbell Live and childhood poverty
Created by kawaii, last reply by gzt on 3-Sep-2014 19:23 (157 replies)
Pages... 9 10 11


What tyre brand/model to look at ?
Created by Mark, last reply by Oblivian on 2-Sep-2014 21:36 (35 replies)
Pages... 2 3


Judith Collins: I am resigning
Created by Presso, last reply by gzt on 2-Sep-2014 11:42 (109 replies)
Pages... 6 7 8


VideoEZY OnDemand
Created by Andib, last reply by sen8or on 3-Sep-2014 07:45 (64 replies)
Pages... 3 4 5


Cirque du Soleil Cellphone Hijack
Created by myopinion, last reply by PhantomNVD on 1-Sep-2014 18:01 (21 replies)
Pages... 2


Orcon Global Mode launched
Created by freitasm, last reply by shk292 on 1-Sep-2014 11:32 (132 replies)
Pages... 7 8 9


Paying cash at retailers
Created by nate, last reply by mattwnz on 3-Sep-2014 19:24 (17 replies)
Pages... 2



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.