It could be both 1 not enough e sides in the mux cab or 2 not enough d sides going to the cab the first one could be expensive if they had to put new esides in if the shelf was full .Normally they wait foe someone to disconnect then you get that eside .If the cab in the streeet is full then we would normally putt some new pairs/ d sides in if there was space on the cable in the cab .what i do not understand if the previous cust had phone why you cant use that e side unless they have not moved far and kept that eside .Normallyy they would send someone out to check the cab for spares in case the records were wrong
