I might be wrong, but with the mention of a hotel or hospitality package, I am guessing this not a MiVoice Office 250 (Mitel 5000) since that is not an application it is used for, but it is a Aastra 5000 or MiVoice 5000 which is sometimes used for hospitality.
If OP will clarify the system or equipment involved, we can either help or move to the correct area.