Two RT30 doesn't work with W60P in chain mode

[Keldar]

Hello all.

I have some problem with W60P and two RT30 in chain mode. It doesn't work.
Second repeated can't connect to base thru destination one.
I've used users manual v1.0
I tried to configure automatic chain or manual, it doesn't matter.

For auto registration:
1. both RT30 register with base - ok
2. on one of them long press button, after that : POWER LED = solid green, DECT = flashing orange. - and what state will be forever...
But in users manual said, after some times should be : POWER LED = solid green, DECT = solid green/orange but it doesn't

With manual chain registration:
1. after first RT30 registered on base W60P and both led solid green, I've to press button short, and RT30 flashed by RELAY LED it's own ID 2
for example.
2. On second RT30 long press button for : POWER = solid green, DECT = flashing orange, and short press 2 times for ID 2, after
RT flash back twice , long press button and POWER LED = solid green, DECT = flashing orange. And it's all. Second RT30 will never enter
in chain mode. (POWER = solid green, DECT = solid green/orange )

I tried to change ID's of both RT30, nothing! Last firmware W60B-77.83.0.25.rom + factory reset. Nothing.
original firmware : 77.81.14.1 doesn't work too.

Now I'm stack.
Maybe someone have any clues ?

WBR,
Dmitry Keldar.