[Asterisk-Users] ADSI phone vs. IP phone

[Ulexus]

On Sunday, 18 January, 2004 02:04, Ken Alker wrote:
> Assuming the price of an ADSI screen phone (say, Aastra 390) was the same
> as an IP screen phone (say, Cisco 7960) and someone was setting up an *
> server for their 20 employees (each of whom would have either an ADSI or IP
> phone on their desk), would there be advantages to using the ADSI phones
> over the IP phones, or vice-versa?  For discussion, let's assume that the
> hardware needed to patch the ADSI phones back into * was not a cost
> concern.  I'm looking for differences between the technologies independent
> of cost.
>

Pretty much no.   The ADSI specification was crippled from the start to 
specificly not compete with PBX offerings.   It has one advantage of (very 
limited) programmability, but a phone like the SNOM has an open-source core.  
It also has the dubious value of being interchangeable with a regular analog 
phone, but that is about it.

You will not get anything near the functionality and feature set of a SIP 
phone, and it has the further irritation that much of its signalling is both 
in-band and audible.

It is too bad.  If it were properly implemented, the concept behind ADSI is 
great.  Unfortunately, Telcordia strikes again.

--
Sean C. McCord