When connecting to your mailbox on CUE and prompted to enter a pin, after having keyed in the pin you receive a "Sorry I did not hear your entry or something lik that...."

Fix:

Make sure you have the "dtmf-relay sip-notify" under the sip dial-peer 

so,

dial-peer voice 5550 voip
session protocol sipv2
sessioni target ipv4:192.168.1.88 (this is the cue service-module ip)
no vad
dtmf-relay sip-notify (don't use h245-alpha or anything else and don't forget to put this command in)
destination-pattern 5550 (the voicemail pilot number)
codec g711ulaw (cue only understands g711, you could use a transcoder for a translation need be)