It was a 2 member panel. One person was from the Signalling side and another seemed to be from the programing side of things. Signalling questions were straightforward and on ISDN only - * What is the difference between T1 and E1, BRI and PRI * What is TE & NT * Mandatory vs Optional parameters * Line encoding and framing errors * L2 messages Programming questions were on C - * Search occurrence of string A in String B. * Add Node to a Sorted Linked List at correct position. Overall, I felt that their interest in me waned once they understood that I do not have a *ISDN ONLY* experience.