Total REN seems to be OK. Only 3 devices. Globe: 0.8, Cordless phone: 0.8, old Bell phone: 1.8

Took some more measurements at different places.

Output jack off the 3600HGV

After run from 3600HGV -> patch panel -> NT1 -> patch panel  -- (NT1 also has a short run to the Bell phone)

Output jack off the globe (with Bell phone still connected to NT1)

All measured the same

During ring (consistent over multiple rings) frequency goes 20.48 -> 23.97 -> 25.68 -> 22.59 -> 25.88 -> 22.59

Duty cycle is between 45.5 and 46%

Pulse width is 22.1 ms for the first half of the ring and 19.1ms for the second half.

Who knew I should have taken measurements for comparison before they turned off the POTS...

Yea, I suppose the globe ring circuit may have deteriorated. ... or maybe my 3600HGV is out of spec? Anybody curious enough to measure the ring on their 3600HGV?

If there was some way to get the specs I might be able to get mine swapped if it's not in tolerance.

Yeesh, AT&T says they either don't have the info or won't divulge it and refer you to 2wire. 2wire was bought by Pace who will only talk to their ISP customers.

The ring boosters look cool (and appear to address the frequency and square sine wave as well) but maybe over my cost threshold for giving up on the info globe.