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.




3000 posts

Uber Geek

Trusted

Topic # 7356 8-Apr-2006 14:20
Send private message

Does anyone know of a good email-fax system available in NZ? Obviously Faxing does not work over VoIP. or any possibility of getting a NZ based "fax number" which then email to me. (I'm using Vodafone Faxmail but callers pay mobile charges)

another Q
Does anyone allow VoIP using uncompressed 64Kbps audio? (as per standard landlines) rather than the current Vocoders?

Create new topic
25691 posts

Uber Geek
+1 received by user: 5445

Moderator
Trusted
Biddle Corp
Subscriber

Reply # 32575 8-Apr-2006 15:37
Send private message

iTalk appears to offer some form of fax support, there have been people who say it works fine and others who have had trouble. I'll try and find out some more details for you.

649 posts

Ultimate Geek

Trusted

Reply # 33077 16-Apr-2006 10:15
Send private message

I have been able to send faxes but unable to receive. At the moment not an issue as retain one land line.
Does anybody have any experience with T.38 or FoIP, that would like to share findings?   

 
 
 
 


84 posts

Master Geek


Reply # 34058 26-Apr-2006 22:03
Send private message

why would you need towo data cards ?
I thought they were unlimmited data ??

84 posts

Master Geek


Reply # 34061 26-Apr-2006 22:05
Send private message

iTalk appears to offer some form of fax support, there have been people who say it works fine and others who have had trouble. I'll try and find out some more details for you.

where do we find out about the italk fax service ?
I've been using italk voice with 3x lines for 6 months now and its great

836 posts

Ultimate Geek

Trusted

Reply # 34217 28-Apr-2006 16:48
Send private message

If you used g.711 and had a low jitter and reasonable latency to the softswitch in question it should work, or just use t.38 as other have pointed out

84 posts

Master Geek


Reply # 34219 28-Apr-2006 17:14
Send private message

If you used g.711 and had a low jitter and reasonable latency to the softswitch in question it should work, or just use t.38 as other have pointed out
whats g711 and t38 ???

836 posts

Ultimate Geek

Trusted

Reply # 34224 28-Apr-2006 17:34
Send private message

Codecs. Normally when I dont know what something is I try looking it up in wiki/foldoc/google first as they usually have a far better definition than some fob from a forum :P

They are both codecs, g.711 is uncompressed pcm, the stuff you used in a normal digital PSTN. t.38 is a codec designed for transporting fax over ip as VoIP codecs dont treat the fax modulation scheme nicely.



3000 posts

Uber Geek

Trusted

Reply # 34254 28-Apr-2006 23:33
Send private message

I had researched some more since I last touched this....

G.711 has 10ms frame length with 64kbps bit rate; This is uncompressed PCM, just like a standard landline. Fax capable
G.722 has 10ms frame length with 64kbps bit rate; Another implemetation of uncompressed Landlibe PCM Fax capable
Compressed CODECS

G.726-32 (also referred as G.721) has 10ms frame length with 32kbps bit rate; V Good, Sounds like Vodafone 3g, Data/fax does not work
G.728 has 2.5ms frame length with 16kbps bit rate; Handleable, Quite cellphone like, Data does NOT work.
G.729 has 10ms frame length with 10kbps bit rate; OK, No fax, Impossible
G.723 has 30ms frame length with either 5.3kbps or 6.4kbps bit rate. Actually sounds good though robotic. No fax. No way
iLBC has 20ms or 30ms frame length with 15.2kbps or 13.3kbps bit rate; Very dated CODEC.

iTalk supports the high uncompressed bitrates and sounds fantastic.


FYI...Fraktul.. We are hardly "FOBS" here... We probably know as much or actually are the guys who UPDATE Wiki with it's relevant info.

836 posts

Ultimate Geek

Trusted

Reply # 34261 29-Apr-2006 02:34
Send private message

Frame length is a strange term measured in ms from a networking background. I know they use this, just IMHO would rather use sample length.

Anyhow. Sample length/frame length is actually variable per codec on some of them (maybe all, not sure). Plenty use 20ms for g.729 for example.

Also to reduce overhead you can specify for example waiting for two 'sample lengths' before generating an Ethernet frame to reduce overhead slightly. Grandstream have this in a voiceframe per TX option I know however I am not 100% sure other vendors support this.

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 »

New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39


UAV Traffic Management Trial launching today in New Zealand
Posted 12-Dec-2017 16:06


UFB connections pass 460,000
Posted 11-Dec-2017 11:26


The Warehouse Group to adopt IBM Cloud to support digital transformation
Posted 11-Dec-2017 11:22


Dimension Data peeks into digital business 2018
Posted 11-Dec-2017 10:55


2018 Cyber Security Predictions
Posted 7-Dec-2017 14:55


Global Govtech Accelerator to drive public sector innovation in Wellington
Posted 7-Dec-2017 11:21


Stuff Pix media strategy a new direction
Posted 7-Dec-2017 09:37


Digital transformation is dead
Posted 7-Dec-2017 09:31


Fake news and cyber security
Posted 7-Dec-2017 09:27


Dimension Data New Zealand strengthens cybersecurity practice
Posted 5-Dec-2017 20:27


Epson NZ launches new Expression Premium Photo range
Posted 5-Dec-2017 20:26


Eventbrite and Twickets launch integration partnership in Australia and New Zealand
Posted 5-Dec-2017 20:23


New Fujifilm macro lens lands in New Zealand
Posted 5-Dec-2017 20:16



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.