GSM-gateways and other “Elgato” equipment are result of own research and development done by our company. You may have a look at this article (Russian language) about how the development of the CPU-board is performed. This board is present in the GSM-gateways of G20 and G8 series. http://habrahabr.ru/post/238929/ (rus)
VoIP-GSM gateways G20/G8-series support GSM and UMTS (optional) networks, as well as they can be equipped with PRI, FXO and FXS ports thanks to modular architecture. This way you may have any telecommunication technologies together in this device. Besides, the device is based on Linux OS and ARM-processor capable of running Asterisk (universal IP-PBX www.asterisk.org), OpenVPN (VPN-network client), Kannel (SMS-server www.kannel.org) and other handy software «on board» for implementing extremely portable and cost-efficient solutions.
Huge number and frequent rotation of SIM-cards makes it necessary to load SIM-bank with “fresh” cards fast. In order to replace several cards it is enough to remove them from the SIM-holders directly and it does not required to stop whole system or to remove any parts. The same way you can replace the whole SIM-holders with 10 SIM-cards by replacing it with another one. If you need to replace quickly 100 or 200 SIM-cards – you can prepare in advance 10 or 20 holders filled with SIM-cards. You can replace filled old holders with filled new ones. It allows to cut time for "reloading" of system many times.
The design of SIM-bank Elgato provides maximal flexibility no matter if you deal with big number of SIM-cards or with single cards. The advantage of such approach is the easy reserving of SIM-cards and fast SIM-bank loading. In order to remove or to insert the whole SIM-holders in the bank it is not necessary to make power off or remove any parts of the equipment.
When using GSM-gateways it often happen, you call somebody and get no immediate reply. Shortly, the subscriber calls back to missed call number (GSM-gateway number) and reach unfamiliar call-center operator or unfamiliar office worker. It brings disappointment and additional time expenses on both sides.
Multichannel PCI-board Elgato for Asterisk helps to avoid such situation by implementing Call-clipping feature. The feature allows to remember pairs of numbers (caller and called) and check the incoming number against “caller-called” pairs in the database. If found – the Asterisk module will connect calling people to the found operator SIP-number. GSM-card module settings allow defining for how long this information is stored in the database.
The GSM-card is certified according to Elastix Hardware Certification Program (EHCP) for usage with Elastix (www.elastix.org). Link to the list of certified hardware.
The external API of SIM-server Elgato is based on json technology. The API is constantly under development. Recently it is updated with new command: callStatus. This command enables the user to fine-tune SIM-card behavior based on its call-stage with more precision and integrate SIM-server with any external software. It is useful for optimizing activation, monitoring and rotation tasks, etc. To read more about API-commands you can request list of features, DOCs and demo-access.
Any anti-fraud system is based on knowledge of mobile operator fraud-machine methods. This knowledge can be obtained on own experience or “professional advice”, but this information can not be actual forever. Operator change and update rules all the time that is why the main feature of your SIM-server should be flexibility.
SIM-server Elgato provides an unique level of flexibility to fine-tune system and match mobile operator rules. You can control allowed time for SIM-card per day, number of calls. It is also possible to change IMEI codes and generate incoming calls inside “family”. Besides, the equipment allows to automatically rotate SIM-cards, base stations, remove SIM-cards from rotation on “balance low” and on “blocked” events. Also, it can simulate user action like balance checking, Internet access, SMS-ing to “friends” (constant group of contacts) and many more other features.
SIM-server Elgato software interface allows to setup SIM-cards “human emulation” for surfing the Internet. SIM-card can go to Internet “occasionally” from time to time via GPRS or 3G-connection. The connection type is defined automatically and solely depends on network type (GSM, UMTS) the SIM-card currently registered to.
System setup options allow to define the frequency of Internet surfing and to define a list of websites which will be visited by SIM-card “owner”. This feature is good to use together with other functions of “human emulation” like cross-calling and cross-smsing inside «family» and switching between Base Stations.
GSM-gateways Elgato allow to setup special mode of interaction between the GSM-gateways and Base Transceiver Station (BTS). For example, there is special mode for switching automatically between visible 6 base stations on certain conditions.
Switching among BTS is performed during pauses between voice calls. Frequency of BTS switching is set by randomized time bounds. Besides, some of visible base stations can be excluded from the list. The list is available on the web-interface of GSM-gateway and accompanied with some additional information. Operation mode and base stations list can be set up for each GSM-module individually.
Elgato GSM-equipment is capable of performing tasks not only for voice telephony but also for establishing full-scale SMS-solutions. By using GSM-gateways or GSM-cards it is possible to perform bulk SMS-sending and receiving of SMS in GSM and UMTS networks, execute USSD-requests and perform testing of mobile network services quality.
It is possible to integrate device in any system by protocols HTTP, SMPP, Email-SMS, AT-commands via TCP/IP directly to the GSM-modems and others. By using GSM-cards Polygator under IP-PBX Asterisk it is possible to work with SMS via SQLLite database or dialplan. In order to use the Gateway as QoS probe it is possible to setup custom script execution on each event. The script can be written on any scripting language supported by Linux Shell and will be executed each time event detected by software. For example, the system can perform HTTP-request to remote server each time SMS or Call received. Such HTTP-request may include additional information like caller number, IMSI of receiving SIM-card, data about BS and additional timing information.
For creating big-scale systems it is worth to consider the use of SMS-gateways with SIM-banks and SIM-server software. By using a SIM-bank you can save time on processing hundreds of SIM-cards, automatically perform SIM-card activation and using cheap SMS-plans. The system will automatically rotate SIM-cards in GSM-gateways in order to keep constant service availability. Additionally, Polygator SIM-server software can be controlled by external systems via an API.
If you need to connect FXS gateway Elgato to network, but you do not have cable in the right place you still can use Wi-Fi. By installing Wi-Fi USB-dongle in one of the USB-slots, you can immediately have the device working in wireless networks.
VoIP-FXS gateway Elgato can be equipped with up to 40 FXS-channels, as well as with FXO-ports, GSM-ports and UMTS/GSM-ports for direct inserting of SIM-cards or using remote SIM-bank. Pre-installed IP-PBX “Asterisk” can be optionally engaged in telephony tasks as standalone mini-PBX.
VoIP-FXS gateway Elgato is available in chassis for 19” rack installation. Chassis height is 1U, material - metal. Having 40 FSX-ports gateway enable you to integrate modern telephony technology like international SIP-trunks quickly even with old analogue desktop phones.
VoIP-FXS gateway Elgato can be equipped with up to 40 FXS-channels providing direct connection of regular analogue phones. Some FXS-channels can be replaced with FXO-channels (for receiving analogue lines), as well as with GSM-ports and UMTS/GSM-ports for direct SIM-card insertion or for remote SIM-cards commutation.
The gateway can be used for fast integration of SIP-telephony in offices, hotels and any other institutions with big number of analogue line phones. Besides, the gateway have IP-PBX Asterisk installed, which can be engaged optionally. Enabling on-board IP-PBX software will turn gateway into standalone full-functional mini-PBX.
G20 series GSM-gateways are capable to commutate calls not only to GSM but also to landlines (PSTN) as well as to connect analogue phones. Adding analogue FXO-ports and FXS-ports are as simple as adding GSM ports - by installing extension boards.
Currently, them maximum allowed number of FXO-ports are 4. Number of FXS ports is limited to 40.The maximal number of GSM-channels are 24.
For example, by installing G20 equipped with 24 FXS-ports, 4 FXO-ports and 4 GSM-ports, you will have multifunctional Asterisk-based IP-PBX. It will provide you with all modern IP-PBX features (voice menu IVR, call recording,...) and will commutate 24 analogue desk phones, 4 landlines and 4 SIM-cards.
Money saving opportunities:
1) you don't buy standalone PC-server for IP-PBX
2) you are not forced to change analogue desk phones to SIP-phones
3) all users save money by calling via GSM-gateway
Software "chan-Polygator" is recently updated. It provides all functionality of the PCI GSM card under Asterisk. Module "chan-Polygator" is updated to version 1.7.9 to sustain maximum compatibility with recent Asterisk release 12.
PCI GSM card for Asterisk provides voice and SMS processing and produced in two versions for 4 and 8 SIM-cards.
Hybrid mode (PRI and VoIP concurrently) is implemented for gateways of K32 series. This allows flexible switching to VoIP technology for owners and buyers of PRI-versions of К32 GSM-gateway.
Hybrid mode allows to assign certain GSM-channels to work with PRI trunk and certain channels to work with VoIP in a single device.
|"G20 Office PBX" is one of possible setups for new VoIP-GSM-gateway model G20. This is Gsm-gate with preinstalled and ready for use IP-PBX Asterisk. It is possible to add FXS (and also FXO) modules or connect external FXS/FXO gate. It supports external IP trunks.|
|Various implementations of prepaid "hotline" for phone-based service are possible on Elgato equipment and according software. One of the schemes: users of your system buy pin-codes for 5, 10 or more minutes of service, call to "hotline", input pin-code and use their servicing time.|
To organize such service you will need equipment and software similiar to listed below:
1. Multichannel VoIP-GSM-gateway Elgato - for accepting incoming GSM-calls.
2. IP-PBX platform - for implementation of voice menu (IVR), users outhentification and users commutation to operators. The system warn users when user minutes limit almost over and disconnects from paid service automatically.
3. Communication channels between operators in office, remote operators and administrators of system.
System cost and functionality depends on number of simulaneous calls necessary (how many users can use system at the same time) and your needs for special functions to be implemented (languages, custom IVR, algorythms or call switching between operators, call-back etc.).
Operators of call center use regular internet-browser (Mozilla Firefox, IE, Chrome …) and phones (regular phone with IP adaptor, SIP-phone, Soft-phone with headset, SIP-enabled mobile phone with i.e.). You can see call center system in action on your computer through Internet - for this please make contact throught the web-site or call +380-63-7973020 or +380-56-7215188 to get access and Live-demonstration.
|PCI-express support is implemented for GSM-cards for 8 and 4 channels. Standard of PCI-e is 1x. The card supports all functions of the previous model (PCI-series) and available for ordering.|
New SIM-bank is small sized and (height 1 unit, 1U, size 29х20х4,5 cm) and allows to use up to 100 SIM-cards with SIM-server platform as well as with VoIP-GSM gateways "Elgato". This model of SIM-bank is a compact version of SIM-bank with a capacity of 200 SIM-cards – its size is 2/3 of a major model size.
By connecting one or more SIM-banks, it is possible to extend the number of SIM-cards accessible by SIM-server. SIM-banks can be placed in one or several places. Compact size makes it comfortable to transport and place the device.
External USB-devices can be used for network connection thanks to USB-ports available on board. In order to connect Internet/Intranet can be used Ethernet-connector (on board) or external WI-Fi/3G-dongle (USB).
New model of SIM-bank (100 SIM-cards) is available for ordering. Warranty – 2 years.
Size: 29х20х4,5 cm
Capacity: 100 SIM-cards
Power supply: 12 V (external power unit 110/220V is included)
|GSM gateway Elgato G20 updated to be scalable up to 20 and 24 channels by applying new firmware and by installing extension cards. |
We offer a new control mode for Remote Power Switches. If this mode is activated, the unit answers a telephone call to SIM card, then you can use DTMF commands for immediate switching on, off and "resetting" any channel. The default mode is off.
Example of DTMF control utilization: