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Introduction Passport 4400 Hardware Installation Manual
1-5
Refer to Chapter 6, Analog Voice Modules, for more detailed information
concerning these modules.
Interface Modules (WAN)
Interface Modules for WAN are installed in Port2 and Port 3 on the Ethernet
Base Module.They consist of the following modules:
• WAN Serial Interface Module - NTAU03AA
• 56 kbps CSU/DSU Interface Module - NTAU02AA
• T1 CSU/DSU Interface Module - NTAU04AA
• E1 CSU/DSU Interface Module - NTAU96AA (120 ohms) and
NTAU97AA (75 ohms)
• ISDN TA U Interface Module - NTAU05AA
• ISDN TA S/T Interface Module - NTAU06AA
Refer to Chapter 7, Interface Modules (WAN), for more detailed information
concerning these modules.