Cisco ISR 4000 Licenits SL-4330-UC-K9

The Cisco SL-4330-UC-K9 is a Unified Communications license for the ISR 4331 router in the Cisco ISR 4000 series. It unlocks the voice and collaboration services integrated into IOS-XE, including SRST (Survivable Remote Site Telephony) mode, which ensures continuity of local calls when the link to the central Cisco Unified Communications Manager is interrupted. Activation is performed through the Smart Licensing portal without any hardware intervention.

Suited to mid-sized branch offices with a Cisco IP phone fleet, the SL-4330-UC-K9 provides the voice resilience essential in sectors where internal communication cannot tolerate interruptions. It completes an existing UC architecture without requiring additional equipment. Genuine Cisco license, delivered with manufacturer support.