What is Cisco SRTP?
The SIP SRTP Fallback to Nonsecure RTP feature enables a Cisco IOS Session Initiation Protocol (SIP) gateway to fall back from Secure Real-time Transport Protocol (SRTP) to Real-time Transport Protocol (RTP) by accepting or sending an RTP/Audio-Video Profile(AVP) (RTP) profile in response to an RTP/SAVP (SRTP) profile.
How do I enable SRTP in Cucm?
Verify CUCM Cluster Security Mode SRTP is available only when Unified Communications Manager Security Mode is set to Mixed Mode. Verify the cluster is in Mixed Mode. If the CUCM cluster is not in Mixed Mode, please consider carefully the decision to change the security mode as there are far-reaching implications.
What is Cisco Call Manager used for?
It is an IP-based communications system that allows you to contact your coworkers or customers through audio or video regardless of physical location. The primary function of CUCM is call processing and phone registration.
How do I enable SRTP?
Enabling SRTP Click Users. To the right of the user for whom you want to enable SRTP for, click the Edit (pencil icon). Go to Voice basic settings. Turn on Enable Secure Real-time Protocol.
What is call Manager in VoIP?
CallManager is the call-processing component of the Cisco Unified Communications System. Cisco Unified CallManager extends enterprise telephony features and capabilities to packet telephony network devices such as IP phones, media processing devices, voice-over-IP ( VoIP ) gateways, and multimedia applications.
How does Cisco phone work?
With VoIP, analog voice calls are converted into packets of data. The packets travel like any other type of data, such as e-mail, over the public Internet and/or any private Internet Protocol (IP) network. Using a VoIP service, you can call landline or cell phones.
Where is SRTP used?
With WebRTC, streams are secured by one of two protocols: SRTP or Datagram Transport Layer Security (DTLS). DTLS is used for encrypting data streams, while SRTP is used for encrypting media streams.
Can a single Cisco Unified call manager (CUCM) device terminate a SRTP connection?
A single Cisco Unified Call Manager (CUCM) device cannot terminate a Secure Real-time Transport Protocol (SRTP) connection with an IP Phone using the AES_CM_128_HMAC_SHA1_32 crypto suite and initiate an SRTP connection with an external CUBE device with the AES_CM_128_HMAC_SHA1_80 crypto suite at the same time.
How does SRTP-RTP interworking support work?
SRTP-RTP interworking support is provided in both flow-through and high-density mode. There is no impact on SRTP-SRTP pass-through calls. SRTP is configured on one dial peer using the srtp and srtp fallback commands.
Which domains do not support SRTP?
Domains that do not support SRTP or have not been configured for SRTP, as shown in the figure below. RTP Cisco applications or servers. For example, Cisco Unified MeetingPlace, Cisco WebEx, or Cisco Unity, which do not support SRTP, or have not been configured for SRTP, or are resident in a secure data center, as shown in the figure below.
What is the SRTP package?
The SRTP package defines SRTP sessions to an SRTP gateway. The package takes the information in SDP security descriptions, and additional information, and translates it to MGCP connection parameters, events and signals, connection options, and even an offer/answer type of capability.