Dual Fiber Interface Module (Fim); Dual T1/E1 Module - Mitel 3300 General Information Manual

Dual Fiber Interface Module (FIM)

The Dual Fiber Interface Module (FIM) converts:
• Optical signals received over a fiber optic cable to electrical signals.
• Electrical to optical signals for transmission over the cable.
This module allows you to connect peripheral units, NSUs, or DSUs to the controller using fibre
optic cable. This capability allows peripheral units to be located at greater distances.
The Dual FIM is composed of a transmitter, receiver, and control section. The control section
generates control signals and the transmit clocks. This section also regenerates the telephony
clocks for the peripheral units, and provides status information for the Main Controller.

Dual T1/E1 Module

The Dual T1/E1 Module is a digital trunk interface that supports the direct connection of
ISDN-PRI, T1/D4, QSIG, and IDA-P trunks on the MXe Controller.
This module has two ports supporting two digital links. Each port can support a different protocol.
T1 interfaces (1.544 Mbits/sec) support:
• ISDN PRI and QSIG links composed of 23 B-channels (bearer channels) for voice or data
plus one D-channel (data channel) for signaling
• T1/D4 links composed of 24 B-channels
• IDA-P.
E1 interfaces (2.048Mbits/sec) support ISDN PRI and QSIG links composed of 30 B-channels
plus one D-channel.
Note: The following features are not supported for embedded ISDN PRI links: D-channel
backup, NFAS, and min/max capability.
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