8-Port Serial GPIM Interface Specifications

Table 64 lists the network interface specifications of the 8-Port Serial Gigabit-Backplane Physical Interface Module (GPIM).

Table 64: 8-Port Serial GPIM Network Interface Specifications

Description	Specification
Network Interface Specifications
Line encoding	NRZ and NRZI
Line Protocols	EIA-530 EIA-530A EIA-449 RS-232 V.35 X.21
Modes	data terminal equipment (DTE) clear to send (CTS) data carrier detect (DCD) data set ready (DSR) data circuit-terminating equipment (DCE) request to send (RTS) data terminal ready (DTR)
Synchronous Tx/Rx rate/port	Up to 8 Mbps
Error counters	rx_error_counts, tx_abort_counts, rx_giant_counts, rx_runt_counts, and crc_err_counts
HDLC Features
Mode	56K or 64K
PPP, Frame Relay, and Cisco-HDLC protocols	Supported
Shared flag	Supported
Idle flag/fill (0x7e or all ones)	Supported
Counters	Runts, giants, fcs error, abort error, and align error