It appears this would be the first contact; the summons and complaint would give enough information to allow the plaintiff to be researched. Knowing who the OC was might help, at least as far as knowing whether the debt buyer might be able to get enough documentation to prove the debt in court; the type of debt is essential. It's not important who the attorney is, and it may be "safer" for the OP to not identify the law firm at this time.
If the first contact was within the 30 day period, a DV would help in one respect, if the law is followed: It would delay the case until the verification is obtained and forwarded. However, since the OP has been served, answering the complaint would be necessary anyway, with the information sought in Discovery if the Rules so allow. In this case, because of the demand amount ($10G's +), it's likely this is not a Small Claims case (in most states, it would not be). If it IS a Small Claims filing, the OP can almost certainly motion the court to move the case to the regular court docket; they should do so right away.
However, is it really necessary to fight this one? No, I am not asking the OP to be a doormat for a JDB! Just look at what they have told us already: The OP owes more than $10 grand on this debt, plus another $15,000 in unsecured debt, plus their car note! In other words, it's likely this person owes $35,000 or more...I suspect a lot more. The debt being sued on defaulted in 2002...around five years ago; most of the rest of the financial mess probably dates to about the same time. Unless their income is really good now (and garnishable) and/or there are significant assets that can be seized or sold to pay judgments/debts, taking a default and then discharging the judgment (and the other debts) in BK may be a real option for them.