Performance Settings (DIP Switch)
If you are experiencing performance issues with your Ethernet connection you may use the following
DIP switch settings to adjust your application. For DIP switch 2-4 you must toggle both symmetrically,
in other words the CO and CPE must match. If you turn DIP switch 3 Up (Off) on the CO, then you
must do so for the CPE and vice-versa.
•
Switch 1: CO / CPE Mode
CO Mode – Up / Off Position
CPE Mode – Down / On Position
Central Office Equipment (CO) is generally the equipment residing at the Carrier Telephone office
or the head end of a circuit. Customer Premise Equipment (CPE) is generally the equipment
residing on the customer side of a circuit. Typically you would place the CO at the local end and
the CPE at the remote end for reference only. CO’s only communicate with CPE’s.
•
Switch 2: Error Correction Mode
Interleaved Error Correction Enabled – Up / Off Position – degrades performance
Fast Channel – Down / On Position (Default)
Interleaved Error Correction works better for file transfers, where the delivered data must be error
free but latency incurred by the retransmission of error packets is acceptable. Fast channel is
preferred for streaming multimedia, where an occasional dropped bit is not noticeable or
acceptable.
•
Switch 3: 17a (over 1,500ft) / 30a (under 1,500ft) Mode
17a Mode – Up / Off Position
17a mode is only used for Interlink runs over 1,500ft to 6,000ft.
30a Mode – Down / On Position (Default)
30a mode is only enabled for Interlink runs under 1,500ft.
•
Switch 4: Signal-to-noise Noise Ratio (SNR)
9dB – Up / Off Position
6dB – Down / On Position (Default)
Signal-to-noise ratio is a measurement that refers to how much noise is in the output of a device,
in relation to the signal level. If you experience issues of noise bleeding over the lines, or high
interference in your environment, it is suggested that you switch to 6dB SNR. This may help
clean up any noise bleeding over your cabling.
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