I n 2002 an i nt er nat i onal t el ec ommuni c at i ons c ompany expr es s ed c onc er ns t o OES over qual i t y i s s ues wi t h t hei r s uppl i er of Loc al Exc hange Ter mi nal s ( LETs ) . OES was c ont r ac t ed t o s uppl y t he c l i ent wi t h 2 c r i t i c al ver s i ons of t hei r LETs . I n addi t i on t o t he as s embl y of t he LETs , t he c l i ent al s o r equi r ed a Val ue Added Res el l er ( VAR) t o s uppl y t hem wi t

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