Another Shot
The back of the 5302. Note the stubby case. The bump-out on the 500 case is more pronounced as opposed to the cut-off look of the 5302 case. Also, the mounting/line cord exits the case in the middle as on a 302, not on the left corner like the 500.
Many 5302's were issued with the older F-1 style handset. I think they look mismatched and prefer the look with the G-1 handset, which was designed for the 500's case. The transmitter and receiver elements of the 500 would not work with the 302 chassis, so the G-1 handsets issued with the 5302's were retrofitted to accept the older style F-1 and HA1 transmitter and receiver elements designed for the 302. And with that, one of the biggest industrial pranks on the consumer (and one of AT&T's shrewdest hardware moves ever) was guaranteed a flawless execution.
How can one not love this textbook example of yankee ingenuity?

The back of the 5302. Note the stubby case. The bump-out on the 500 case is more pronounced as opposed to the cut-off look of the 5302 case. Also, the mounting/line cord exits the case in the middle as on a 302, not on the left corner like the 500.
Many 5302's were issued with the older F-1 style handset. I think they look mismatched and prefer the look with the G-1 handset, which was designed for the 500's case. The transmitter and receiver elements of the 500 would not work with the 302 chassis, so the G-1 handsets issued with the 5302's were retrofitted to accept the older style F-1 and HA1 transmitter and receiver elements designed for the 302. And with that, one of the biggest industrial pranks on the consumer (and one of AT&T's shrewdest hardware moves ever) was guaranteed a flawless execution.
How can one not love this textbook example of yankee ingenuity?
