Cisco ISR 4000 Licenits SL-4350-UC-K9

The Cisco SL-4350-UC-K9 is a Unified Communications license for the ISR 4351 router in the Cisco ISR 4000 series. It activates the telephony and collaboration features built into IOS-XE, including SCCP protocol support, SIP signaling, and SRST (Survivable Remote Site Telephony), enabling the router to handle voice communications in the event of a lost connection to the central CUCM.

Designed for telecom managers deploying IP telephony at branches connected to a Cisco Unified Communications Manager, the SL-4350-UC-K9 ensures continuity of internal calls even during a WAN outage. It is well suited to healthcare, banking, and industrial environments requiring high voice availability. Genuine Cisco license, manufacturer warranty.