I tried that route - but walked away as you end up using an expensive set of kit for a function that can be done by a sub £40/$50 DECT phone set. The inter connectivity and subsequent capability is poorly documented by Cicso, so you end up running around - disapointing.
A point I've raised to Cisco on the SPA302D, which ironically is/was linked from the SPA340W Cisco web material - implying interconnectivity working capability [a bit of a mouth full].
Wendy, while your answer is disappointing I do appreciate your prompt reply. Becuase the SPA302D and corresponding base station are not compatible with the UC320W or SBCS, I *strongly* suggest Cisco re-number the product, perhaps to SPA402D or something similar.
As Peter mentioned, there's lots of marketing material out there that says the SPA300- and SPA500-series phones are compatible with both the UC320W and UC500 series appliances but that's just not true for the SPA302D, which is clearly marketed as part of the SPA300 family. Very misleading!
Wendy, again, I appreciate the reply but Cisco.com needs to be fixed/updated. If you go to the UC320W homepage you see this:
Then if you click on Cisco SPA Series IP Phones you see a picture of a SPA302D (which is not supported):
Then worst of all, if you continue to scroll down the pretty graphic very strongly implies that all phones in the SPA300 family are supported on Cisco Small Business (read: UC320, SBCS) platforms.
If you go to the SPA300 homepage you see the following:
It *plainly* says the SPA300 IP phones are supported with the SBCS, even if it makes no mention of the UC320W. Can you at least put in a ticket to your internal helpdesk system or something to update these texts to reflect that the SPA302D is not supported on ANY Cisco Small Business phone systems?