23 Pa. C.S. § 7210
A tribunal of this State exercising personal jurisdiction over a nonresident in a proceeding under this part, under other law of this State relating to a support order or recognizing a foreign support order may receive evidence from outside this State under section 7316 (relating to special rules of evidence and procedure), communicate with a tribunal outside this State pursuant to section 7317 (relating to communications between tribunals) and obtain discovery through a tribunal outside this State under section 7318 (relating to assistance with discovery). In all other respects, Chapter 71 (relating to general provisions), 72 (relating to jurisdiction), 73 (relating to civil provisions of general application), 74 (relating to establishment of support order or determination of parentage), 75 (relating to enforcement of support order without registration) or 76 (relating to registration, enforcement and modification of support order) do not apply, and the tribunal shall apply the procedural and substantive law of this State.
23 Pa.C.S. § 7210