...I know it is not a Meridian switch, but rather centrex service, but just need some quick assistance. We recently purchased 60 sets for one of our field offices and the seven-foot line cords are not long enough for our needs. We are going to purchase longer cords, but I need to know if the RJ clips on the ends need to be reversed (like with M2000 series digital Meridian phones) or straight thru like with analog devices such as fax machines. Also, does anyone know a vendor who sells these longer cords that would work with the M5316 sets? Finally, are one-pair cords sufficient? I don't know since I have not seen the existing line cords in our field office. Any assistance would be greatly appreciated.