You have to review what the court order says that placed the restaining order on you in the first place. If you have a child together, the court usually orders some form of communication. This could be through a third person. You left out a lot of facts dealing with why there is a restaining order in the first place. I also don't know if you have any custody arraignment or visitation. If the call was not in violation of the court order you should fight it. If you want a contact order to talk with the child, visitation etc, that is done in family court. You really should contact an attorney to review all the facts. Remember, if in the future you do want visitation etc, having convictions for violating court orders is going to be frowned on by the family law court.
Any answer to questions is not meant to be con screwed as legal advise and no attorney client relationship has formed. In order for an attorney to give legal advise, The attorney would need to have an opportunity to ask specific questions from a full and complete disclosure of the underlying facts involved in the question asked.
As the prior attorney indicated you must review the restraining order to see what the terms of the order are. Some restraining orders state "no contact" other restraining orders allow for "peaceful contact" or contact regarding children are to be done via text as opposed to in person. Can you fight the charges is dependent on 1. the terms of the restraining order. Without knowing all the facts it is difficult to give you advice on fighting these charges.
I do not know what the custodial arrangements are between you and your wife, however you want to make sure that this arrest and possible conviction does not impact your child custody.
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