Specifications

Appendix A
A.2.1 Web Management
The “E1 Port” tab displays status and information and also sets up the framing and timeslot assignment. The
frame mode can be framed or unframed (clear channel). Framed mode supports either CCS (PCM31) or CAS
(PCM30) framing. Line code has support for either HDB3 or AMI. The pass thru timeslot data can be filled with
either 0x7E (standard idle code) or 0xFF. Remember to click “Save” after making changes.
The “Data Port” tab provides the information and settings for the serial data port. When set to “Auto”, the device
will identify the cable attached to the port automatically. In the example below, an RS-530 cable is used. This
converter supports software setting of DCE or DTE mode. Typically a modem such as this is DCE (TD is an input).
When set to DTE, no crossover cable is required (TD becomes an output). The RC, TC and ETC clock signals all
support inverting polarity to correct for some errors caused by different cable lengths. The handshaking can be set
to follow or forced constantly on. The data port supports a software enabled Loop Back function. If this port will be
used to oversample asynchronous data, there is a setting to allow error free use in this application.
Under the “Device” tab we can set the timing as recovery from E1 receive, from data port clock receive (such as when in DTE
mode), clock from an internal oscillator (master clock) or a transparent clocking mode. There also is located here loop back
and integral BER testing.
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