Connecting To T3 Pstn Interfaces; Figure 5-2: Mini Smb-To-Bnc Adaptor Cable (Not Supplied); Figure 5-3: Connecting The Smb Connector Pair For T3 Interface - AudioCodes Mediant 3000 Hardware Installation Manual

Hardware Installation Manual
5.2.2

Connecting to T3 PSTN Interfaces

RTM-6310 provides three pairs of Molex mini-SMB receptacles for providing up to three T3
PSTN interfaces. Each mini-SMB pair provides a female connector for receiving and a
female connector for transmitting. These SMB jacks must be connected to coaxial cables
(not supplied).
To interface with the SMB receptacles, you need to provide (i.e., not supplied) the following
items:

Cable: RG-179/U coaxial cable (see figure below)

Connector: 75-Ohm (44.736 Mbps) male mini-SMB terminated on a coaxial cable
(see figure below)
The required cable is a Mini SMB-to-BNC cable adaptor (not supplied). Two cable adaptors
are required per T3 interface (i.e., per SMB receptacle pair). The figure below displays this
cable adaptor.

Figure 5-2: Mini SMB-to-BNC Adaptor Cable (Not Supplied)


To connect the T3 PSTN interface:

On RTM-6310, connect twin SMB T3 RG-179/U coaxial cables to the required SMB
receptacles (labeled T3 - A, T3 - B, and T3 - C). For each T3 connection, ensure that
you connect the transmit SMB connector to the SMB receptacle labeled TX and the
receive SMB connector to the SMB receptacle labeled RX.

Figure 5-3: Connecting the SMB Connector Pair for T3 Interface

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5. Cabling the Device
Mediant 3000