Specifications

Installation and Operation Manual Chapter 1 Introduction
Optimux-108 Ver. 6.1 Functional Description 1-7
INT DTE
CLK
EXT
Figure 1-5. External and Loopback Timing
Test and Diagnostics Capabilities
Optimux-108 has comprehensive test and diagnostics capabilities that include
local and remote loopbacks on the uplink interface and on each E1 tributary link.
A local loopback is also supported on the optional V.35 user port.
Maintenance is further enhanced by an automatically performed self-test on
power up.
For activation of loopbacks, see
Chapter 5 .
Alarms and Alarm Indications
Uplink and Tributaries
Optimux-108 detects the following alarm conditions on each E1 and uplink
interface:
• Loss of input signal
• Loss of frame synchronization (on uplink only)
• Reception of alarm indication (AIS) signal, which consists of a continuous
sequence of ‘1’s (on the tributary only)
When not all the tributaries are in use, you can disable the alarm indications
related to the unused tributaries through the software, see
Chapter 5 .
V.35 User Port
On the V.35 interface, Optimux-108 detects the Missing DTR signal (relevant only
for ISO 2110 pinout).
This alarm should be masked when using Telebras and M34 cable (see Chapter 6).
Note