New York Laws
Article 3 - Jurisdiction and Service, Appearance and Choice of Court
R320 - Defendant's Appearance.

(b) When appearance confers personal jurisdiction, generally. Subject
to the provisions of subdivision (c), an appearance of the defendant is
equivalent to personal service of the summons upon him, unless an
objection to jurisdiction under paragraph eight of subdivision (a) of
rule 3211 is asserted by motion or in the answer as provided in rule
3211.
(c) When appearance confers personal jurisdiction, in certain actions;
limited appearance. When the court's jurisdiction is not based upon
personal service on the defendant, an appearance is not equivalent to
personal service upon the defendant:
1. in a case specified in subdivision (3) of section 314, if
jurisdiction is based solely upon a levy on defendant's property within
the state pursuant to an order of attachment; or
2. in any other case specified in section 314, if an objection to
jurisdiction under paragraphs eight or nine of subdivision (a) of rule
3211, or both, is asserted by motion or in the answer as provided in
rule 3211, unless the defendant proceeds with the defense after
asserting the objection to jurisdiction and the objection is not
ultimately sustained.
(d) Appearance after first publication. Where the defendant appears
during the period of publication of a summons against him, the service
by publication shall be deemed completed by the appearance.

Structure New York Laws