The GoIP32/LTE-X4 is 32-channel 4G gateway with 4 SIM slots per channel. 4 SIM cards rotating in per channel. It works with DD-LTE、TDD-LTE、WCDMA、TD-SCDMA、GSM and CDMA Network.
Outbound call from VoIP
Inbound call from PLMN
VoLTE HD Voice
High Concurrency Capability
Quadruple SIMs and Intelligent Switching
Auto obtain SIM Number
Relay encryption and Saving bandwidth
GSM Channels: 32 ports
Power Adapter: DC12V/4.5A
Max power consumption: 30W
Net weight: 2.8KG
Operating Tempreture: 0-45℃
Working Humidity: 10%-90% non condensation
There are a few variants of 4G LTE networks which are currently deployed in various countries or territories.
Type C supports the 4G LTE networks in China as shown in the table below.
Type E supports the 4G LTE networks deployed in the Europe, Middle East, Africa, Korea, Southeast Asia, Hong Kong, and Macau. The table below shows the details of the wireless technologies and the bands and frequencies supported.
VoIP Protocols: SIP V2, H.323 V4
Audio Codecs: g711(alaw/ulaw), g729, g723.1
DTMF format: SIP INFO, RFC2833, Inband
Packet Loss Concealment
Programmable Jitter Buffer: Fixed, Dynamic, Adaptive
Network Connection: DHCP, PPPOE, Static IP
Support English, Chinese
Support Signaling encryption
Support media encryption
Support Media NAT Traversal
Support Remote control
The concept diagram below shows a simple VoIP network for call center application. It consists of a softswitch/IP PBX and VoIP clients such as an IP phone, a call center operator, and GoIPs. All VoIP clients are configured to register to the softswitch/IP PBX. For the GoIPs, each channel is inserted with a valid SIM card in order to access the 2G/3G/4G network. Both incoming and outgoing calls between the VoIP and 2G/3G/4G networks can now be realized.