Pilot GSM Server
- VOIP Billing and Account Management
- Distributed Locations Management
- Remote SIM Card Recharge and Balance Verification via SMS/USSD Control
- Delayed GSM Dial-out with RBT tone
- ASR Filtering based on ANI
- Cancel Timeout Call Request Filtering based on ANI
- Blacklist Management or Number Traps
- Maximum Calls per Minute Control
- Balance Depletion Rate Control per channel
- Human Usage Emulation Management
- Whitelist Management and Control
- Time-Scheduling and After-hours Call Control
- Automated Route Flagging and Blacklisting
- Human IVR Interaction to GSM Operator Agent Calls
- Inbound IVR Management to Provide IVR for Call-ins
- Maximum Useable Channel Management
- Protected Mode Support and Call Control
Unique Features of the GSM Termination Solution:
Destination Number Traps/PINGs
This is the most popular, quickest and undetectable method to suspend SIM cards that terminate GSM traffic. The method relies on calling specific Destination Number numbers that belong to the GSM Network operator that record the caller id (ANI) of the SIM card that terminates the GSM call. Once such a SIM card has one or more recordings of calling the Destination Number Trap numbers, it is automatically suspended in a matter of minutes. Since the GSM Network operators automatically call these numbers on frequent basis and they have a large pool of such numbers, the chances of getting a SIM card to terminate such a call within 24 hour period are over 90%. In most cases such cards are identified and suspended in less than 5 minutes. The important role of the Pilot GSM Server is to isolate such numbers (Destination Number Traps) and enter them into the Black List. This is done automatically even for a very large amount of such numbers in a matter of hours if there is a sufficient volume of traffic. Once the detection of Destination Number Traps is completed the chances of SIM card suspensions are reduced dramatically to lower than 1%.
IMEI Switching and Management
This is required to allow GSM termination providers to change the IMEI identity of their GSM termination modules. This task is highly unreliable using conventional methods, because GSM providers easily get the make/model of the GSM termination modules and match it to the IMEI database they have, and if there is any discrepancy simply flag the IMEI number. For example most GSM Gateway manufacturers, use industrial (not consumer, e.g. Siemens GSM Module) GSM modules that are known to be used in industrial equipment not mobile phones. If IMEI belonging to a Nokia GSM phone is assigned to this industrial module, the GSM provider will immediately detect the discrepancy. Using inexpensive IMEI management procedure that has consistent make/model of a consumer phone along with the low price of such consumer phone, make the Pilot GSM Server a preferred GSM termination device.
SIM Card Sharing Among Remote GSM Modules
This method is very popular among GSM termination providers but proves to be unreliable because it is easily detected. In most cases the SIM card sharing requires that the GSM module unregistered the SIM card from one GSM cell location and then immediately registers in into another GSM module location even if these two module locations are thousands of kilometers apart. The procedure is easily detectable because of the jump of the SIM card in a matter of seconds from one GSM cell location to the other and the fact that there is no roaming involved in the period of this jump. In addition, the IMEI-SIM card pairing changes in a matter of several seconds which makes the GSM network operator aware that this is a computerized switch. Using SIM Card Sharing is a technology which does not provide reliable results and allows for very simple software isolation and flagging of both the SIM card and the GSM module IMEI.
GSM Call Termination Detection
GSM network operators heavily rely on automated call detection to separate human-like GSM call termination from GSM traffic termination. The procedure requires that the operator monitors heavy volume call traffic that has calls without normal call interval between them. A common example is to make 5-6 calls in 20 seconds using the same SIM card, which obviously is not human-like behavior. The Pilot GSM Server takes care of the proper call routing and timing so all processed calls appear normal enough to prevent easy detection. The system spreads out the call volume among all available channels using pre-configured rules to guarantee that all SIM cards are exhibiting human-like call flow.
Uneven GSM Traffic Distribution
This is also a common way to identify the SIM cards that terminate GSM traffic. The Pilot GSM Server requires a larger number of SIM cards to allow proper traffic distribution. If possible it will emulate phone book calling (calling one number from one and the same SIM card every time). It will also do even call distribution among all SIM cards and call minute accounting for minute termination to different networks (in-network and out-network/roaming). In addition, the Pilot GSM Server may control which SIM cards will be used during the day, evening, and night to provide human-like behavior so that corporate cards are used mostly during the day while personal SIM cards make calls during the evening and night. All supported features are configurable.
Outbound-to-Inbound Call Ratio
This method is very popular for GSM network operators to isolate GSM termination - it is unlikely for a normal GSM subscriber to only make outbound calls but to reject all inbound calls. The GSM network operators rely on proper mixture between outbound and inbound calls, so the Pilot GSM Server must provide a solution for this problem as well. The Pilot GSM Server will accept inbound GSM calls and call-backs with an automated IVR to allow inbound call support with variable time, thus the ratio of outbound to inbound is kept within the acceptable GSM network operator limits.
GSM Call Termination Mobility
Pilot GSM Server supports the most popular 3G data modems to allow complete mobility of GSM call termination. This will resolve all mobility associated GSM provider filters. The Pilot GSM Server will provide full roaming services for both GSM voice as well as data traffic. The Pilot GSM Server requires only 60W of power and it can be supplied by any regular automobile battery for several hours (non-rechargeable mode) and indefinitely (rechargeable mode). The Pilot GSM Server can be placed inside any vehicle and fully function under all roaming conditions provided that GSM coverage exists for both voice and data traffic.
Automatic SIM Card Management
SANSFIL has developed the ultimate solution for automated SIM card management to detect card balance depletion and card suspension status so that inbound GSM traffic is not routed to SIM cards that are depleted or suspended. The GSM Softswitch will track all used up minutes terminated within the network and outside the network (roaming). In addition, the GSM Softswitch will monitor in real-time the ACD associated with each card and if the ACD is outside the normal parameters will automatically remove the card from GSM termination rotation. This procedure will guarantee that all SIM cards with valid balance and active status will route GSM traffic.
Solution Implementation and Performance
SANSFIL provide a complete GSM termination solution that relies of intelligent routing and creation of the White and the Black List databases. This is a unique, field-tested solution that works in the long run without the need to support frequent SIM card and GSM hardware replacement. Basically this solution will allow you to make a single investment and run your GSM termination business consistently for a long period of time. The proposed GSM Solution Implementation has two phases: