- Nortel NTRB21AC TELEPHONE SYTEM MODULE CARD RIse 03

NORTEL CS NTDW79ABE5 01 - UDT E1/T1, NTDW12AAE5 01 - NTDW7902 REL01

Nortel Meridian TMDI 1.5 DTI/PRI NTRB21AB W/ NTAK20AD Clock Controller

NORTEL RLSE 01 NTRB21AB TRUNK MODULE CARD

Nortel Networks NTDU14 Modules NTDW60BBE5 & NTDW61BAE5 x2

Nortel Meridian NTAK20AD Clock Controller Card

Nortel NTRB21AC TMDI Card.

NORTEL MERIDIAN TMDI DTI/PRI DIGITAL TRUNK NTRB21AC RLSE 02 + NTAK20ADE5 RLSE 02