印度采购需求：Gpon Olt、Epon Olt、Epon Onu、Xpon Onu、光纤模块、光收发器

I'm currently looking for information about voice modems that support both single band and dual band capabilities. These modems should be suitable for integration within fiber network infrastructures. Could you provide details on your available products that meet these specifications? I'm particularly interested in performance metrics, compatibility with existing systems, and pricing options. Thanks in advance for your assistance!