I have a CS1000 with rel 5.5 and we use the 1140E phones. Our system was installed in Aug of 08 and the 500+ 1140E phones were installed then as well. The mfg date of the phones are 8/08 and for the past 6 months I have had over 50 phones go bad. Most of them are the lower buttons, handsfree, #...
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