Skype on 128k ISDN

[mccrack]

Does it work well or shouldn't i bother?

 

[graviti]

I've used Skype on a 56k dialup before, at a demonstration of the benefits of VOIP. It astounded even me that a 56k dialup could offer such a good quality call. So I'm pretty darn sure a 128k ISDN line will give a perfect quality call.

 

[mccrack]

thanks graviti

 

[ernstn]

I do not know, but I would suggest that if you are calling normal phones you should look at a product such as VOIPbuster, which can connect via callback. In that case all you need the internet for, is to initiate the call and payment.

 

[useless]

i use Skype over my 128k ISDN and even with one 64k channel its clear and crispy! Had a chat to buddies in Brazil the other day and was surprised at how good the quality was.

is it true that on ADSL telkom shapes the skype ports or is it just a bad rumour?

 

[Franna]

For a good quality call the most important aspect is latency. A 2MB ADSL connection with bad latency (+800 ms) will not work great. The bandwidth required for a typical call is about 30K, more than enough that analogue and ISDN can provide. The latency on ISDN is typical better than dial-up, hence the excellent call quality.

Useless - Telkom does indeed shape Skype ports. Their normal shaped ADSL account states that all protocols except HTTP, POP, SMTP, etc are shaped.

From http://www.telkomsa.net/products/adsl_telkom_internet.jsp
"The shaped service distinguishes between the various protocols used over the Internet. The main priority is HTTP. At present, all international HTTP traffic is transparently cached for ADSL users. All international un-cached data is shaped. The following un-cached protocols are prioritised on the network: HTTP (in certain cases HTTP is not cached due to website incompatibilities), HTTPS, FTP, Mail (POP3, SMTP and IMAP), SSH and TELNET. Any protocol not mentioned above will receive a lower priority on the network."