voice translation-rule 1
rule 1 /^55544629/ /29/
!
voice translation-rule 2
rule 1 /^.*/ /90\0/
!
!
voice translation-profile inbound-10digits-to-4digits
translate calling 2
translate called 1
!
The first translation rule will strip off the first 6 digits. The second will prepend 90 to all incoming numbers so that your users can just hit redial on missed calls.
Then apply this rule to the voice port:
voice-port 0/0/0:15
translation-profile incoming inbound-10digits-to-4digits
cptone GB
HTH. Please rate useful posts.