7270 E1 8 PORT CR CARD W/CPU-2 R4.3 This card provides eight E1 ports for Cell Relay (ATM) services on the 7270, with 32k cell buffering per card and advanced traffic management capability. This card allows an optional upgrade module (90-6743-01) to provi

7270 E1 8 PORT CR CARD W/CPU-2 R4.3 This card provides eight E1 ports for Cell Relay (ATM) services on the 7270, with 32k cell buffering per card and advanced traffic management capability. This card allows an optional upgrade module (90-6743-01) to provide up to four groups of ATM Inverse Multiplexing. This card must be used in conjunction with an I/O module (90-4460-02 or 90-4460-03). This card is shipped with R4.3 software.