In addition to the standard status LEDs on all circuit packs there are 4 LEDs on the TN767 labelled status 1,2,3&4. I've been searching all my documentation and can't find what they mean. I also tried support.avaya.com and the site crashed on me. I'm assuming they indicate loop status but am curious if anyone can tell me exactly what each light indicates or point me to the doc that can. Thanks in advance.