CUCM Translation pattern allows to prepend digits to the dialed number. To add a suffix , the only option is to use translation rule on the gateway.The following translation rule appends a 0 to the end of the dialed number.
voice translation-rule 1
rule 1 /\(.*\)/ /\10/
Apply 'translate-outgoing called 1 ' on the dial peer.
For information on translation rules, refer the following urls.
Voice Translation Rules
http://www.cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a0080325e8e.shtml
Number Translation using Voice Translation Profiles
http://www.cisco.com/en/US/tech/tk652/tk90/technologies_configuration_example09186a00803f818a.shtml