Archive for August, 2006

Small Eurotrip in Telecommunication and IT view

Wednesday, August 30th, 2006

During august 19 until august 30, i was in a trip to euro, with main destination: stokholm. I was passing 4 countries, singapore, france, sweden, and spain.

In this article, i would like to share my journey experience from IT and Telecommunication perspective. There are 3 points here, the first is GPRS roaming, followed by 3G, and the last is atm banking.

1. GPRS Roaming
Singapore is the most friendly country. At least, my kartuhalo (Telkomsel postpaid sim card) and xplor (XL postpaid sim card) were successfully doing gprs roaming to singtel and starhub. 
Paris, only xplor that can do gprs roaming, and it was only to France Orange network.
In sweden, both kartuhalo and xplor can do gprs roaming into vodafone SE. But, seems there was a roaming problem during Friday August 25, no gprs roaming can be done at all.
In Spain, no gprs roaming was possible.

2. 3G
This thing can give you a trouble especially if you are using 3G phone. Usually, some operator restric their 3G resources by not allowing you to roam into their 3G radio network. This is normal but unfortunately, some 3G handset do not have any configuration option to keep the handset in 2G and does not try to find 3G nerwork at all. Why is this feature so important? If your handset found any 3G network, the handset will automatically try to attach to the 3G network, and if the network rejects you, you will get a bouncing network, 2G-3G-2G-3G-… and so on
Or the worst case is the handset would not try to find any available network again because it think that the network was already rejecting you, so why it should try to attach to the same mcc and mnc network, even in 2G network. In my M600i, the handset was finally staying in 2G after 4-5 times trying to attah to 3G. And now, i have found that in the new firmware, there is an option to shut off the 3G capability. It is a very usefull option.
Ok,back to network, singtel is allowing their roaming partner to their 3G network, for both voice/video call and 3G gprs.
The other operator that allowing you to roam to their 3G was Telefonica Movistar Spain but movistar is only allowing you to use circuit switched services. No 3G gprs at all. I were dissapointed with this.

3. ATM banking
I did not have any idea about since when Bank Mandiri ATM card works with atm machine outside Indonesia because when I tried it last year in Kuala Lumpur and Singapore, all of them were failed.
I just did some trials in stickhol,spain and paris, and the resulst was impressing me. My atm mandiri card is working well at all the places.

The last thing that i want to tell you is my stupid experience with telefonica moviestar prepaid card. When i realized that there was no possibility to do gprs roaming in spain, i tried to buy a local prepaid card, and because i knew that movistar also has 3G network, i choosed the prepaid card from movistar. After doing some tarzan language with the seller, finally i got the sim card. The bad thing was not stop there, the manual book was in spanish completely. Movistar does something unusual to enable the sim card. Before i did the activation, i was ABLE to do voice call but NOT for SMS and GPRS. In order to make sure about what is my sim card phone number, i tried to call my telkomsel number and as you can guess, “private number” was shown in my handphone. I tried to do sms from movistar number to telkomsel number, and then i realized that sms and gprs was still blocked because i had not done any activation. After some trial and error and guess the meaning of the instruction in the manual book, i got one number that able to make my sms and gprs active after that number dialed. Usually the operator is only need registration for gprs and maybe the worst case is operator blocks all of its services before any activation done. Movistar activation method is something new for me.

I  also put some photos in:

http://rendo.info/gallery2/

 

-rendo-

What is IMPS?

Friday, August 11th, 2006

IMPS stands for instant messaging and presence system.

 

buddy list

 

send msg
Pictures above: I use my sister K750i to connect to Smartvas. 

In a simple words, IMPS is similar as Yahoo Messenger, MSN Messenger, Skype , etc. All of those previous example are famous instant messaging client and community around the world. They are also giving us presence system capability so we can know the availability status of our friends.

If those IMs are already so powerfull, what is the lack of them? Yes, you are right, there is no single protocol to integrate between those IMs. As my previous writing in http://rendo.info/?p=47 , we are not able to do chat between IMs, except MSN and YM maybe which are already integrate their communcation although we are still required to upgrade YM to YM 8.0 and MSN to Live Messenger.

IMPS is an instant messaging standard initiated by Wireless Village Forum which is primarily supported by Ericsson, Nokia and Motorola. This standarization aims is to bring and to have one single instant messaging system regardless the media and the client. This client is not only designed for PC but also for normal handset. Yes, correct, maybe some of you are already familiar with Agile Messenger or IM+, IM clients in symbian/pocket PC handset. Agile Messenger and IM+ (or Gaim and Trillian in PC version) can act as a client for YM, MSN, Gtalk, and AOL but actually inside Agile Messenger and IM+, there are separate client exist to connect to each IM server.

Wireless Village is doing more than Agile messenger, it creates the communication standard between different IM servers and also communication standard between client and IMPS server. We can find the sample of IMPS client in Sony Ericsson handset in “My friends” menu or in “My Presence” menu in Nokia handset. We are free to connect to any IMPS server in the internet. Two famous free IMPS servers is Yamigo http://www.yamigo.com/ and Smartvas http://www.smartvas.com/ . Yahoo also ready to launch its IMPS server http://go.yahoo.com/next/product_messenger but in the current trial version, unfortunately, the server is only compatible with Nokia handset.

I have done some test using Yamigo and Smartvas and currently i feel satisfied with Smartvas. Yamigo seems not too good in reliability. Currently, Yamigo can have connectivity to YM and MSN but Smartvas can only connect MSN.

 

-rendo-