阿富汗采购需求：工业应急电话、防风雨电话、应急电话、防爆电话、监狱电话

I'm looking for payphones specifically designed for use in correctional facilities that are compatible with IMS telephone exchanges. It's essential that these units are robust, secure, and have features tailored to meet the unique requirements of a prison environment. Could you provide me with detailed specifications, available options, and pricing for these payphones? Additionally, please let me know about the installation process and any support services you offer post-purchase. I'm interested in understanding all aspects of these products to make an informed decision.