Donjin’s Keygoe series of multimedia switches are communication platform which can handle almost all types of voice, video applications in any size. While the entry level KeyGoe Series product Keygoe1000 starts with 1 channel and can be increased to 240 channels, and high end KeyGoe Series like KeyGoe 3000 has up to 127 E1 lines.

KeyGoe Donjin Multimedia Switch

All KeyGoe Series products support all types of available telecom protocols like ISDN PRI, SS7, IP ( RTP, H.323 etc). So, a KeyGoe series of product is almost future proof which will never go obsolete. Keygoe series multimedia switches are independent rack 19″ rack-mountable.

In their voice resources, they support all types of CODEC, play audio files of many formats like WAV, ADCPM, Dialogic VOX format. They have inbuilt echo-cancellation, AGC ( automatic gain control), full duplex audio playing and recording. They have VAD ( Voice Activity Detection) as well as CNG ( Comfort Noise Generation).

KeyGoe series products provide 1:1 conference facility for all voice resources. They have built in FAX resources too.

They support Windows Operating System, Linux ( Kernel Version 2.6 and above) and have SDK with many sample codes in C++, C#, Delphi.

The installation and configuration is also quite easy with visual tools to configure various parameters.

KeyGoe Series products are very feature rich, low cost but performs very well. All types of IVR applications as well as telecom solutions can be provided using KeyGoe series of products. Developing Voice applications, Conference application, FAX applications are quite easy using Donjin KeyGoe products.

Donjin support has improved a lot over the time and they have now a big number of installation in India. KeyGoe series products are being used in Hosted IVR solutions, Voice based Value Added Services, Hosted Conference Services as well as hosted Outbound IVR ( Bulk Voice Calling).

KeyGoe series products from Donjin are available at Sunshine Telesoft (P) Limited. in India.

One of the advantages of using Donjin boards is easy portability of C++ codes written for Dialogic boards to Donjin boards! It should not take more than one hour for porting C++ codes from Dialogic boards to Donjin boards. Though, recently introduced KeyGoe series of products from Donjin has totally different API than of Dialogic, but its TDMA CTI boards like DN300, DN600 etc. uses ‘similar’ API as that of Dialogic boards!

Dialogic

Donjin Boards support Dialogic API

Here is the step I used for porting Dialogic C++ codes to Donjin boards in less than an hour:-

1. Header files
Donjin SDK DJNADK is freely down loadable from Donjin website. But it does not contain header files for its LIB files! So, in order to compile your C++ code for Donjin boards, you need to include header files from Dialogic SDK and include LIB files from Donjin. Normally, Dialogic SDK files are located in Program Files\Dialogic\inc while Donjin library files are located in DJNADK\Lib. So, one has to use the correct paths for Include files and then LIB files.
Normally, the below files are needed to be referenced for compiling C++ code for Dialogic Boards
a. libdtimt.lib
b. libdxxmt.lib
c. libgc.lib
d. sctools.lib
e. libfaxmt.lib
f. libsrlmt.lib.
which are found in Lib folder of Dialogic SDK.

And for Donjin boards, the following LIB files need to be referenced :-
a. DNDxxx.lib
b. DNGC.lib
c. DNFax.lib
d. DNSRL.lib
e. DNSCTOOLS.lib
These files are found in DJNADK\Lib folder.

Once these references are made correctly, C++ code gets compiled for Donjin boards !

2. Audio file
Dialogic uses VOX files as well as WAV files for playing back audio files on its boards. While Dialogic supports 8 Bit Mono with 11KHz sampling rate, Donjin supports only 8 Bit Mono with 8KHz sampling rate. So, if your Dialogic code plays WAV files with sampling rate 11KHz, you must change all WAV files to 8KHz sampling rate. It could be a real time consuming job as each files needs to be changed one by one. I have not found any tool/software to change format of WAV files in bulk or all files in a directory yet.

So, once these two processes are complete, your IVR application written in C++ could work in Donjin boards! Many people now days prefer low cost Donjin boards to save initial investment for their On-Premise IVR solutions. The developers who have written Dialogic IVR Application in C++, they can easily port their codes to Donjin CTI boards.

Donjin DN300 is equivalent of Dialogic D300-JCT board. It has one E1 connection ( RJ48 ) and 30 voice resources. Recently, I had an opportunity to test a DN300 board with our EPABX of Coral make DX2000. We used our Predictive Auto Dialer Application, written for Dialogic Digital CTI boards.

Donjin DN300 Board

1. Much like its Dialogic counterpart, it has one E1 with RJ48 connectivity for 30 voice resources and built in signaling protocols.
2. It supports ISDN PRI ( widely used now a days), R2MF. It also supports SS7 ( MTP, TUP, ISUP, SCCP) good enough for any voice portal or intelligent IVR applications.
3. It can work with any other voice boards. For example, it can work with Dialogic boards installed in the same machine. It can be very advantageous for upgrading a system with existing Dialogic boards with new Donjin boards.
4. It is quite cheaper than Dialogic equivalent board. Its market price is around Rs. 120,000/- only and if some one buys from www.ivrsworld.com, he will get another 5% discount. You may buy Donjin DN300 Board from here.

We were provided one DN300 board by Donjin India distributor Sunshine Telesoft (P) Limited, Mumbai. We used Coral DX2000 EPABX with E1 ISDN PRI (EURO) protocol.

We were also informed that it we just need to recompile our Dialogic C++ application using Library files of Donjin NADK SDK. So, first we tried to recompile our Dialogic Application! And wow, we got almost 2500 errors! On investigation, we found out that Donjin NADK does not have any C++ header files for its Library files (They use Dialogic header files only)! Also it uses different names for its Library files than Dialogic ones! Technical support team from Sunshine Telesoft has been quick enough to point me out my mistakes and correct them. And next instance, our code for Predictive Auto dialer Application were rebuilt successfully for Donjin board! It took hardly one day!

Next task was to integrate Donjin DN300 board with DX2000 EPABX! It took pretty long time but it was not fault of Donjin DN300 board, but a fault from EPABX. Finally after many days ( almost 40 days), EPABX guys could find a small programming error due to which calls were getting disconnected! Finally they agreed with our ISDN trace ( Donjin has very powerful and easy to use ISDN trace logger, unlike difficult to use Dialogic tools). Changing parameters like CRC status, Trunk mode/Network Mode in Donjin DN300 boards are quite easy compared to that of Dialogic Boards! Once Donjin DN300 with successfully integrated with DX200 EPABX, we run our application for 48 hours.

It made total 600 outgoing calls. Purposefully we made 10 destination numbers busy, 10 destination numbers which did not exist, 10 destination numbers with CRBT(Caller Ringback Tone), 10 numbers on call waiting. Donjin DN300 board could give all status 100% accurately! So we were very happy with Donjin DN300 performance.

Many people may be skeptical about quality of Donjin boards for it is being priced low or it is a Chinese product, but I did not find any problem when it worked for 48 hours. According to me, if it works for 48 hours, it could work for 48 days together. Very soon, we hope to deploy one predictive Auto Dialer System with Donjin DN300 board and would like to update this post with my experience with it.

Contact address for Donjin Boards, in India :-

Manager (Sales)
Website:www.sunshinetelesoft.com
Sunshine Telesoft (P) limited
Suite # 513, Laxmi Mall, New Link Road, Andheri (W), Mumbai, India – 400053.
Tel: +91 22 40 365 365.
Fax: +91 22 40 365 300.

Donjin has range of CTI products starting with 8 port analog cards to 8 E1, 240Port high density Voice boards.

They support Windows OS and as per their website and they support APIs of Dialogic 5.11 System Release fro DMV1200 boards! That seems to be an useful feature as many IVR Software are developed based on Dialogic APIs. Migrating from Dialogic to Donjin cards may be easier.
They also have single port and dual port SS7 Signaling boards. The signaling board and voice boards are connected through CTI cable just like Dialogic Boards.

Recently they have entered into an strategic agreement with one Indian Telecom Software Development Company Amdale.
Donjin Communication Technologies (“Donjin”), A leading manufacturer specializing telecom products, multi-media switches based in Shenzhen, China and Amdale Software Technologies (“Amdale”), A global developer of open architecture-based SCE (Service Creation Environment) building blocks framework for telecom applications, based in Gurgaon, India, have entered into a strategic understanding. As per news on www.donjin.com.

While I have not tried their boards or there is no price list given on their website, it looks like a cheaper alternative to Dialogic CTI Cards for lower density, normal IVR Software.