This appendix provides the procedures for installing the GTX Series routers' optional modules and for installing and removing a SIMM.
The module is intended to be installed in UL listed and CSA certified equipment in the field by the user in the manufacturer's defined operator access area. See the installation instructions in this section to verify that your equipment is suitable for user-installed modules. Cette carte est destinee a etre installee par l'utilisateur, sur place et a l'interieur de la zone definie par la fabricant, dans un appareil certifie CSA. Consulter le mode d'emploi ou le fabricant de l'appareil pour verifier ou confirmer si l'utilisateur peut y installer lui-meme des cartes peripheriques. Always disconnect the module from the telephone system when you install a module or when you remove the router's cover. Toujours debrancher la ligne telephonique de la carte modem (muni d'une prise ou d'une fiche) avant de proceder a l'installation dans l'appareil ou lorsque le couvercle de celui-ci est retire. Installing a Module
Installing a SIMM
Removing a SIMM
Installing a Module
The procedure for installing a module in a GTX Series router is basically the same for all the modules.
If you are installing a WAN or an ISDN module, read the following Warning/Attention. Remember that you can only install an ISDN module in slot 3 and the 10BaseT module in slot 2.
Warning
Attention
Warning
Attention
To install a module . . .
Note: You can install the ISDN modules only in slot 3 and the Ethernet module only in slot 2. You can install all other modules in any of the three configurable slots on your router.
Note: When you install a Modem, DDS, ISDN, T1, or E1 module, do not connect the telephone line until you have installed the module itself and, when you remove the Modem module, remove the telephone line connection first.




CAUTION:
If you have a slot in your router that does not have a module installed in it, be sure to install a blank slot cover in each open slot to ensure proper airflow inside the chassis.
Be careful to line up the motherboard's screw holes with the chassis' screw holes.

Be careful to line up the motherboard's screw holes with the chassis' screw holes.
Be careful to line up the motherboard's screw holes with the chassis' screw holes.