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Nope. &nbsp;The whole point of SRST is to allow the router to handle call control if the phones can't reach call manager. &nbsp;CUCME is the router..
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Nope.  The whole point of SRST is to allow the router to handle call control if the phones can't reach call manager.  CUCME is the router..

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Thank you for your fast reply. so, CUCME could have SRST function if we configure it at remote router.<br />
The reason why we use SRST rather than CUCME at remote router is that the SRST is cheap/free, right?
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Thank you for your fast reply. so, CUCME could have SRST function if we configure it at remote router.
The reason why we use SRST rather than CUCME at remote router is that the SRST is cheap/free, right?

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Let me clarify. &nbsp;You still need to buy an SRST license, but I think you cost will be less than CME.
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Let me clarify.  You still need to buy an SRST license, but I think you cost will be less than CME.

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Do you think SRST is necessary if the router is configured as CUCME?
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Do you think SRST is necessary if the router is configured as CUCME?

Do you think SRST is necessary if the router is configured as CUCME

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Voice Over IP

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.