Cisco C3925E-CME-SRST/K9

The Cisco C3925E-CME-SRST/K9 is a router model from Cisco's 3900 Series Integrated Services Routers (ISR). It is designed for medium to large-sized businesses and offers advanced routing, security, and voice capabilities. The "CME" in the model name stands for Cisco Unified Communications Manager Express, which is a built-in call processing solution for IP telephony. This feature allows the router to function as a voice gateway, providing call control, voicemail, and other telephony services. The "SRST" in the model name stands for Survivable Remote Site Telephony, which is a feature that allows the router to provide basic call processing functionality in the event of a network outage or loss of connectivity to the main call manager. Overall, the Cisco C3925E-CME-SRST/K9 is a versatile router that combines routing, security, and voice capabilities, making it suitable for businesses that require advanced networking and telephony solutions.