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350-801 · Question #392
350-801 Question #392: Real Exam Question with Answer & Explanation
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Voice Gateways and Session Border Controllers
Question
SIP proxies have operations defined in RFC 3261 and supporting extensions. Though no lETF RFC completely defines how SBCs must function. SBCs evolved over the years. Which two operations demonstrate the high-level differences between SBCs and SIP proxies? (Choose two.)
Options
- AStateful proxies are context-aware and can terminate communication sessions by themselves
- BSlP proxies add a Via header and optionally a Record-Route header, and the rest of the headers
- CSBCs can modify headers such as To, From, Contact, and Call-D.lt can introduce new headers
- DSBCs are capable of interworking completely different protocols to set up, modify, and tear down
- ESIP proxies are SDP-aware and can change the SDP bodies
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Topics
#SBCs#SIP Proxies#Protocol Interworking#SIP Headers