Sangoma CTI Board can now access GSM SIM directly

Sangoma has introduced an interesting CTI product W400 which adds GSM voice connectivity and SMS capabilities to IP-PBX applications. While CTI applications have been invading many PBX features, this GSM voice as well as SMS facility would add another important feature to CTI applictions which was other wise in exclusive domain of traditional PBX,that is LRU ( Least Cost Routing) using GSM gateway!

Sangoma W400


Normally, most of the GSM operators provide cheaper call rates to its own network. Also, call from landline to Mobile Phone is costlier. So, people have been using GSM Gateway or GSM cards in traditional PBX to route call using the cheapest CO line from PBX extension. For example, if if extension A dials a Airtel Number, the PBX will route the call to go from an Airtel SIM connected to its GSM Gateway or GSM Card. Likewise if extension A dials an international number, it can use a SIM card which has cheapest international call rates. Thanks to Sangoma W400 CTI board, this kind of smart LCR can be implemented in CTI applications too!

In countries other than India where PSTN and VOIP inter-connectivity is not banned, this board also offers opportunity to route calls through VOIP which is a huge savings!
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Outbound IVR : Interesting Implementation

Recently, I have come across some interesting outbound IVR ( Interactive Voice Response System) implementation. While it may not be the best outbound IVR arrangement, but it sure is the cheapest and most reliable in the circumstances in India. Just to mention, majority of the outbound IVR applications dial out a number, plays a recorded message and disconnect. It does not capture any response from the called party.

OUTBOUND IVR Implementation in India

How is this outbound IVR implemented ?

It uses a EPABX ( Electronic Private Automatic Branch Exchange ) which has minimum one PRI card in it as well as few FXO/CO lines. Then it uses normal SIM ( Subscriber Identity Module) of all available GSM operators available in India ( GSM Cards available on many EPABX models in India). There are also few equipment called “E1 PRI ISDN GSM Gateway” which allows connecting multiple SIMs at one end and E1/PRI link at the other.

Apart from this, it uses normal CTI board with E1/PRI connectivity and one smart outbound IVR with database connectivity.
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