Specifications
Chapter  1 Introduction  Installation and Operation Manual 
1-6  Functional Description  Optimux-108 Ver. 6.1 
V.35 User Port 
Optimux-108 can be also ordered with an additional V.35 user port. This port has 
a V.35 DCE interface supporting both ISO 2110 and Telebras pinouts on DB-25 
connectors and M34 connector pinout. All these pinouts are supported via 
external cables.  
Ethernet User Port 
Optimux-108 can be also ordered with an additional Ethernet user port. This port 
operates at a rate of 10/100 Mbps and can be set to 10/100 full or half duplex, 
autonegotiation enable/disable. It supports flow control enable/disable option 
and MDI/MDIX connection. 
Timing 
The uplink interface supports only internal timing mode.  
The clock of each E1 channel is independent for each channel and transferred 
transparently. 
The V.35 interface supports internal, external, and loopback timing modes. 
The figures below describe the three clock modes supported by the V.35 
interface. 
Figure 
1-4. Internal and Loopback Timing 










