Specifications

Installation and Operation Manual Chapter 1 Introduction
Optimux-34 Ver. 2.81 Functional Description 1-7
V.35 Interface
Channel 16 can be selected for E1 or for V.35. When selected for E1, channel 16
works as a regular E1 channel. If selected as V.35, the V.35 interface becomes
active and works at a fixed E1 rate.
V.35 is a DCE interface and supports both ISO 2110 and Telebras pinouts
according to the ordering options.
The V.35 module supports three clock modes: Internal, External and
Loopback Timing.
Redundancy Functions
The redundant power supply and the redundant link modules ensure that
Optimux-34 continues to operate even if one of these critical modules fails.
Power Supply Redundancy
In the redundant power supply mode, both supplies share the Optimux-34 power
consumption. If one of the power supply modules fails, the entire power
consumption of the unit is automatically drawn from a single power supply. In
this case, the respective PWR LED on the front panel indicates the active power
supply.
Link Redundancy
An additional link interface can be ordered for backup. The two link interfaces
must be either both electrical or both fiber optic. If they are fiber optic, they can
be of different types. The link interfaces are implemented by interchangeable link
modules plugged into two dedicated SFP slots at the front of the Optimux-34 unit
designated LINK A (MAIN) and LINK B (BACKUP). Front panel LEDs provide AIS and
signal loss (SYNC LOSS) indications on the link.
When two link modules are installed, the redundancy mechanism of the
Optimux-34 is used to do one of the following:
• If LINK A fails, then the link interface automatically changes to LINK B.
• Force transmission via the MAIN link using a software management tool for
maintenance purposes if the redundancy mode is OFF.
When the redundancy mode is MANUAL and the main link is disconnected or fails,
the backup link is forced into the active state. The main link will not resume
transmission as long as the redundancy mode is MANUAL.
Tributary Interface Characteristics
Optimux-34 supports 16 E1 channels. The E1 interfaces, both RJ-45 and BNC,
comply with the ITU-T Rec. G.703. Line coding is HDB3. Balanced transmit levels
are nominally ±3V for balanced termination and ±2.37V for unbalanced
termination. A pair of LEDs monitors loss-of-signal and AIS on each E1 receive
line.