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Appendix A Technical specifications 81
Nortel VPN Router Installation — VPN Router 2750
Figure 29 Modem cable (9-pin D-sub plug to RS-232-C modem plug)
Table 21 provides the modem cable pinouts.
Hardware option cards
The VPN Router 2750 provides four PCI slots that support a combination of the
following option cards:
• VPN Router Security Accelerator card
• SSL VPN Module 1000
• 10/100BASE-TX Ethernet interface card
• 1000BASE-T (1000 GT) Ethernet interface card
Table 21 Modem cable pinouts
Nortel termination Modem termination
Signal Pin # to Pin # Signal
Data Carrier Detect 1 8 Data Carrier Detect
Transmit Data (TXD) 2 2 Transmit Data (TXD)
Receive Data (RXD) 3 3 Receive Data (RXD)
Data Set Ready 4 6 Data Set Ready
Data Terminal Ready 6 20 Data Terminal Ready
Clear to Send 7 5 Clear to Send
Request to Send 8 4 Request to Send
Pin 1Pin 5
Pin 6Pin 9
10 ft
(3.05 m)
9-position D-sub receptacle with screw locks
(ground shield connected to backshell)
CAB0056A
Pin 13
Pin 1
Pin 25
Pin 14
25-position D-sub plug with screw locks
(ground shield connected to backshell)