WP7607 - UART1 doesn't work

I have done some interesign experiment…

On this side there is a nice overview of the AT!MAPUART command…

I have set UART1 (my problem UART) as output for the Linux Console (with AT!MAPUART= 16,1)

While bootup of the module, the module now shows his complete boot process in my terminal.
(You can see here)
WP7607 Booting !MAPUART 1,16 Linux Console.txt (14.2 KB)

So the transmitt hardware of the WP7607 is working perfectly.
Iam also shure that, the receive hardware to the module is working.