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VoLTE : Apart from the LTE standard nodes like SGW, PGW and PCRF , what are all nodes involve to provide VoLTE ?

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VoLTE : Apart from the LTE standard nodes like SGW, PGW and PCRF , what are all nodes involve to provide VoLTE ?
posted Oct 22, 2015 by Harshita

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1 Answer

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Similar to LTE core network, IMS has its own network.
LTE core network has various nodes such as MME, SGW, PGW/PCEF, PCRF, HSS.
IMS core network has various nodes such as P-CSCF, I-CSCF, S-CSCF , SLF , HSS.

Each node belongs either to LTE network or IMS network, has specific set of functions that it performs.

answer Oct 25, 2015 by Alok
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