QSIG is the generic name for a family of signaling protocols. The Q reference point or interface is the logical point where signaling is passed between two
switches in a private network. QSIG signaling allows certain features to work in a single-vendor or multi-vendor network. QSIG complies with the International Organization for Standardization (ISO) Integrated Services Digital Network (ISDN) private-networking specifications. QSIG is defined by ISO as the worldwide standard for private networks. QSIG uses ISO standard protocols as well as call
independent signaling connections (CISCs), administered as non-call-associated temporary signal (NCA-TSCs).
QSIG Name and Number Identification allows a switch to send and receive the calling number, calling name, connected number, and connected name. QSIG Name and Number Identification displays up to 15 characters for the calling and connected name and up to 15 digits for the calling and connected number across ISDN interfaces.
Check with youe local Avaya Business Partner to see if this is turned on in your switch. If not, you are seeing the D channel information passing through the switch and not the switch information itself
Netcon1