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Harald Welte laforge at gnumonks.orgHi! So for everyone who has problems with BS-11 clock accuracy, what would be the theoretical straight-forward way to solve the problem, is to replace the 32.768MHz crystal oscillator on the E1 card with a OCXO of the same frequency. So what we're looking for is an OCXO with +/- 0.05ppm or higher stability for 3.3V power supply. Unfortunately I was not able to find one at that frequency, even digikey doesn't have one. If anyone can find a source for a OCXO in the abovementioned parameter range (and small quantities), I think quite a number of people would be interested in buying one and connecting it to their E1 boards. Any help is much appreciated. Thanks! -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)