ICNISR4k#show version
Cisco IOS XE Software, Version 16.12.03
Cisco IOS Software [Gibraltar], ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.12.3, RELEASE SOFTWARE (fc5)
I can run this command for a 8845 sip phone
#show voice register pool 1 layout
Pool Tag 1 layout:
Using custom button-layout
button-layout 1: line button 1: number 1002
button-layout 2: line button 2: unconfigured
button-layout 3: line button 3: unconfigured
button-layout 4: line button 4: unconfigured
button-layout 5: line button 5: unconfigured
button-layout 6: undefined button type
button-layout 7: undefined button type
button-layout 8: undefined button type
button-layout 9: undefined button type
button-layout 10: undefined button type
But the minute I run it for a 9971 phone , the router stops responding crashes and reboot
