Avanex rhymes with:
albunex, cognex, genex, immunex, moulinex, quanex, abex, albunex, alpex, ashtec's, cognex, complex, cortex, culex, dudeck's, forex, gemex, genex, ibex, immunex, index, inlex, koscheck's, micrografx, mondex, moulinex, ovex, pantex, patlex, proctorsilex, purex, quadrex, qualex, quanex, reflex, rolex, rorex, royex, semtex, simex, spinifex, timex, trizec's, uzbeks, vortex
Avanex sounds like:
abbenhaus, abeyance, abiam's, affines, affining, affymax, afonso, aping, avana's, avemco, avemco's, avenge, avenue's, avenues, aviano's, avionic, avionics, avions, avon's