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IntroductionPassport 4400 Hardware Installation Manual
1-4
T1/E1 and Digital Voice Modules
T1/E1 and Digital Voice Modules are installed in the slots above the Ethernet
Base Module (slots B, C, D, E). They consist of the following modules:
• T1 Voice Module
— TVM/1, Single Port - NTAY99AA
— TVM/2, Dual Port - NTAY14AA
• E1 Voice Module
— EVM/1, Single Port - NTAY15AA
— EVM/2, Dual Port - NTAY16AA
• Digital Voice Module (DVM) - NTAU60AA
— Ordering six modules - NTBQ54AA
— Ordering twelve modules - NTBQ55AA
• Digital Voice Expansion Module (DVEM) - NTAY18AA
• ISDN BRI Voice Module (IVM/2) - NTAU76BA (for use in the Passport
4430 and 4450 only)
One Digital Voice Module (DVM) must be inserted in the TVM or EVM for each
digital voice channel required. To provide full T1 or E1 support, the Digital Voice
Expansion Modules (DVEM) provides additional slots for DVMs as required.
Refer to Chapter 5, T1, E1, and Digital Voice Modules, for more detailed
information concerning these modules.
Analog Voice Modules
Analog Voice Modules are installed in the slots above the Ethernet Base Module
(slots B, C, D, E). They consist of the following modules:
• Analog Voice Module
— AVM/1, Single Channel - NTAU61AA
— AVM/2, Dual Channel - NTAU62AA
• Universal Analog Voice Module (UAVM/2) - NTAU50AA
• Voice/Fax Switch Module - NTAU52AA
Up to four analog voice modules (AVMs or UAVMs) are supported on the
Passport 4450 and 4455, for a maximum of eight analog voice ports. Up to two
analog voice modules are supported on the Passport 4430, for a maximum of
four analog voice ports.
The AVM and UAVM modules support the following interface modules:
• Foreign Exchange Station (FXS) - NTAY12AA
• Foreign Exchange Office (FXO) - NTLN23AA
• Ear and Mouth (E&M) - NTAY09AA