T29 vs T46

[jolouis]

Form factor?

My bet is under the hood they are the same board/LCD/etc, just put into two different bodies. The T4X series is Yealink's premium line, while the T2X series is more of the "Value/legacy" line. From a marketing perspective I can see why they would offer both phones even though functionally they're almost the same... T29 gives customers who have an office full of T2Xs already a unified "update path" so that they can gradually update power users to gigabit without the office looking like a mish-mash of two completely different phone styles. On the same road, it also gives you the option of mixing deployments of the cheapest Yealink sets along with high end Gigabit ones while still maintaining the same overall appearance. From a techie point of view that might sound odd, but from a sales/customer perspective it's often important (I'm a techie so I don't get it, but this is what our sales people mention to us all the time)

On the other hand, if you're doing new installs from scratch then push the entire T4x series for the "premium" feel.

I would guess that the T29G exists due to requests from the market/demand for it. I believe Yealink is also doing their very best to kill off the T3x series, so it makes sense to have a T29G which would be a direct stand in for the T38G (The T3x series have different underlying hardware and never really fit into the grand plans. They were a bit of a band-aid while figuring out the T4x series, and it makes sense to essentially merge them into the T2x series so that there are only two product lines to manage)

That's just my two cents though...