Why SIP
Several advantages abide to application SIP gateways as articulation gateways:
■ Dial plan agreement anon on the gateway: This makes it possible, for example,
to handle appropriate calls, such as calls to anon affiliated analog devices, locally
on the aperture after acquisition them to the Cisco Unified Communications
Manager. Addition book could be to avenue calls that are directed to added sites
directly on the aperture after sending them to the bounded Cisco Unified
Communications Manager cluster.
■ Translations authentic per gateway: This makes it accessible to accommodated bounded requirements
such as calling affair transformations or appropriate cardinal formats. This also
allows you to construe all admission calls anon on the aperture to accommodated the internally
used cardinal architecture and again action calls with alone those centralized numbers
on the Cisco Unified CallManager clusters aural the network.
■ Advanced abutment of third-party telephony systems: Because SIP is the best widely
used accepted aural VoIP systems of altered vendors and has abounding features
included as non-proprietary functions, application a SIP aperture enables you to integrate
third-party telephony systems.
■ Interoperability with third-party articulation gateways: Best third-party articulation gateways
support SIP. Therefore, application SIP would be the best achievable way to affix a Cisco
IOS articulation aperture to a third-party articulation gateway, rather again by application addition VoIP
signaling protocol.