The IMS (IP Multimedia Subsystem) is a required network node to provide the VoLTE (Voice over LTE) service on an LTE network. The UA-UIMS loads major IMS nodes in a virtualized hardware environment, and is a cost-effective IMS solution that is appropriate for small-size mobile communication networks and special mobile networks.
|CSCF (Call Session Control Function)||SIP-based call processing, terminal number identification, and QoS management|
|TAS (Telephony Application Server)||Additional call service information management and additional service call processing control|
|MRF (Media Resource Function)||Media resources processing (call mixing, DTMF tone extraction, information broadcasting sending, etc.)|
|IBCF (Interconnection Boarder Control Function)||Interfacing other vendors IMS/LTE network|
|MGCF (Media Gateway Control Function)||MGW control to interface the line exchange network (PSTN, PLMN)|
|Integrated OAM||Managing the integrated operation of UA-UIMS nodes|