IAX phone
"Finally an IAX handset that is worth buying" was Ruben's review of the Citel 4110 phone last year.
See http://www.open-voip.com/blogs/blog1/2009/04/24/finally-a-iax-handset-that-is-worth-buyi
VoIP Supply's free phone and T-shirt offer is over now I think though....
Here is quote
"Why IAX? Is not SIP the solution to everything VoIP?
There are three main reason why I think IAX is a better protocol to deploy in certain environments compared to SIP + RTP.
The first reason is the firewall issue. For users with simple firewall setups (”nothing goes in, everything goes out”) SIP can, in theory be as easy to get going as IAX. However in practice this is often not the case. The simplest part of SIP is the protocol running on port 5060. This is seldom a issue, but as soon as you involve RTP, problems will sooner or later rise and create a lot of confusion and iritation."
The Citel 4110 IP phone supports SIP as well of course, but there seem to be plenty of people using the IAX mode as a simple way to pop a remote onto an Asterisk installation without having to worry about NAT/firewall issues.
Check it out at http://www.citel.com/Products/ip-phones.asp
See http://www.open-voip.com/blogs/blog1/2009/04/24/finally-a-iax-handset-that-is-worth-buyi
VoIP Supply's free phone and T-shirt offer is over now I think though....
Here is quote
"Why IAX? Is not SIP the solution to everything VoIP?
There are three main reason why I think IAX is a better protocol to deploy in certain environments compared to SIP + RTP.
The first reason is the firewall issue. For users with simple firewall setups (”nothing goes in, everything goes out”) SIP can, in theory be as easy to get going as IAX. However in practice this is often not the case. The simplest part of SIP is the protocol running on port 5060. This is seldom a issue, but as soon as you involve RTP, problems will sooner or later rise and create a lot of confusion and iritation."
The Citel 4110 IP phone supports SIP as well of course, but there seem to be plenty of people using the IAX mode as a simple way to pop a remote onto an Asterisk installation without having to worry about NAT/firewall issues.
Check it out at http://www.citel.com/Products/ip-phones.asp
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There's another review of the Citel 4110 at
http://blog.dontcallmyboss.com/2009/05/blog-post.html
Phones now come with a card pointing to the manual at www.citel.com/Products/ip-phones.asp
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