The biggest rout in shares of EZchip Semiconductor Ltd. in a year is prompting analysts to pare back bullish calls as signs mount that the telecommunications industry is slowing. EZchip, which counts Cisco Systems Inc. and Juniper Networks Inc. as its largest customers, said Oct. 6 that third- quarter sales would miss its own guidance by more than 10 percent, sparking a 14 percent retreat in its New York-traded shares last week.