88 Chapter 5 Nortel VPN Router 1750 option installationNN46110-317 02.01Installing or replacing option cardsThe VPN Router 1750 has four slots for option cards (Figure 27 on page 86). Thissection provides instructions about adding new option cards to the VPN Router1750 or, if necessary, replacing an existing card.Table 6 lists the option cards that you can install in the VPN Router 1750.Table 6 Supported option cards for the Nortel VPN Router 1750Option cardMaximumnumber RestrictionsSSL VPN Module 10001 1 Install this card in slot 1 only.VPN Router Security Accelerator 21Install one VPN Router Security Accelerator card orone Hardware Accelerator card. Do not install aHardware Accelerator card in slot 4.Hardware Accelerator10/100BASE-TX Ethernet interface 41000BASE-T (1000 GT) Ethernetinterface341000BASE-T (1000 MT) interface(copper) 42Install two 1000BASE-T (1000 MT) cards, two1000BASE-SX cards, or one card of each type. (Butsee “Installing the SSL VPN Module 1000 with otheroption cards” on page 89.)1000BASE-SX interface (fiber) 556/64K channel service unit/digitalservice unit (CSU/DSU) WAN interface 64ADSL WAN interface7 4Integrated Services Digital Network(ISDN) BRI S/T or U interface84T1CSU/DSU WAN interface (full-height) 4 For E1 support, you must install the half-heightinterface card.T1/E1 CSU/DSU WAN interface(half-height)4Quad T1/E1 CSU/DSU WAN interface 9 3V.90 modem interface10 4 If an SSL VPN Module 1000 is installed in slot 1, donot install the V.90 modem interface card in slot 2.Single V.35/X.21 WAN interface(full-height)4
