210-065 · Question #428
Which protocol is used by Cisco Unified Communications Manager and ISR for media resource control?
The correct answer is B. RTSP. RTSP (Real-Time Streaming Protocol) is the protocol Cisco UCM uses to control media resources hosted on ISR gateways, such as MTPs and transcoders.
Question
Which protocol is used by Cisco Unified Communications Manager and ISR for media resource control?
Options
- ACisco Discovery Protocol
- BRTSP
- CSCCP
- DSIP
How the community answered
(36 responses)- A6% (2)
- B86% (31)
- C3% (1)
- D6% (2)
Why each option
RTSP (Real-Time Streaming Protocol) is the protocol Cisco UCM uses to control media resources hosted on ISR gateways, such as MTPs and transcoders.
Cisco Discovery Protocol is a Layer 2 neighbor discovery protocol and has no role in media resource control.
RTSP is used by Cisco Unified Communications Manager to communicate with and control media resources - such as Media Termination Points and transcoders - that are hosted on Cisco ISR routers. UCM sends RTSP messages to allocate, connect, and release these DSP-based media resources during call processing.
SCCP (Skinny Client Control Protocol) is used for signaling between IP endpoints (like phones) and UCM, not for media resource control on ISR gateways.
SIP is a call signaling protocol used to establish sessions, not to control DSP media resources on an ISR.
Concept tested: RTSP for UCM media resource control on ISR
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmsys/CUCM_BK_SE5FCFBE_00_cucm-system-guide-100/CUCM_BK_SE5FCFBE_00_cucm-system-guide-100_chapter_0101.html
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