Modem Function Unit (Modu/Ntb413) - Vertical SBX IP 320 Installation Manual

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Other Board Installations 4 17
Chapter 4: Board Installation

Modem Function Unit (MODU/NTB413)

MODU should be installed on the MODU connectors (CN4) of the MBU, and provides an
analog modem connection. It supports Bell, ITU-T, V.34, V.32BIS, V.90 Protocol at a speed rate
of 300bps up to 33Kbps, and automatic rate negotiation.
SBX IP 320 Installation Guide