Dinstar 16 Port GSM VoIP Gateway with IMEI Change, 16 Ports Gateway, 16 ... , IMEI Change Dinstar 16 Port GSM VoIP Gateway with IMEI Change, 16 Ports Gateway, 16 Port Gateway ... used to connect with mobile PBX, failover for PSTN, LCR for call center and PBX and call termination.16 ... White & Black list Echo cancellation, CNG and VAD Voice prompts, HTTP Web, Auto Provision support for configuration and ...