Overview (C2911-CME-SRST/K9)
C2911-CME-SRST/K9 is a Cisco 2911 router bundled with Voice Bundle w/PVDM3-16, FL-CME-SRST-25, UC License PAK.
When Unified CME is used in SRST mode, it provides more call processing features for the IP phones than those are available with the SRST feature on a router. In addition, to the SRST features such as call preservation, auto-provisioning, and failover, Unified CME in SRST mode also provides most of the Unified CME telephony features for the SCCP phones.