Full version with AOC (Advice of charge) and tone detector.
A huge quantity of originally packed and used dialers which have been all tested and updated, of course with guarantee.
Supplier: ISDN-Least-Cost-Routers of type PARLAY i2, i4, i8, i30i and also MITEL 1 BRA, 2 BRA, 1 PRI. Supporting LEAST COST ROUTER-equipment to the alternative telecommunication market for fixed line operators