GSM payphones
Card versions
Card payphones connects to the GSM network. Three different models adapted according to user requirements. Can be package to different mechanical requirements.
Features
- Operate from 12V power supply – car battery or solar panel.
- GSM dual frequency.
- Receive and make emergency calls without using a card.
- Use a GSM simcard (Credit card size) to dial.
Coin version
Features
- Operate from 12V power supply – car battery or solar panel.
- GSM dual frequency.
- Receive and make emergency calls without using coins.
There are more than 180,000 payphones in South
Africa consisting of three different types.
They are the coin
phones, which are blue in colour, the card
phone and the combination card/coin phone, which are both
green in colour and look very similar.
Coin phones represent approximately 50% of the total.
All coin phones are Global269 enabled. The card
phones and the combination phones cannot access the Global269 network. In most
cases, you will find coin phones co-located
with the card phones. A few
very remote or high crime areas do not have coin phones.
To place a Global269 call on the coin phone you do not need to deposit a coin.
To place a Global269 call, lift the receiver; wait until the display reads, “INSERT
COIN, OR DIAL TOLL FREE NUMBER.”
Dial the international access code “09” followed by your Global269 number. You will be
able to interact using the keypad. Be
sure to allow the phone to display the above message before starting to
dial or you may experience keypad problems.
If you find a coin phone that does not work, call the service
centre number on the phone label and report it to Telkom.
After dialling the Global269 number, the coin phone will display “NO COIN REQUIRED.”
Card phones and Combination phones cannot access the
Global269 network at this time.
If you attempt to use a card phone or combination phone your call
will be blocked. If you
have inserted a card, it will not be debited.
Tellumat has over 100 000 line-powered card payphones under licence from Anritsu of Japan installed at Telkom. According to Clive Pink, General Manager of Payphones at Tellumat, the solution was supplied after the previous analog system showed signs of reaching capacity.
"The traditional way of connecting payphones to the front-end server was via a modem, similar to the way we connect to the Internet," says Pink. "But a limiting factor of the payphone is that it is line-powered and operates on very low power, so the modem is a relatively slow V.23 modem. More recently, we introduced a V.22 modem into the field that improves data transfer speeds but still falls way short of the V.90 modems we use to connect PCs to the web."
After meeting with Telkom in 1997, Pink set out to find a cleaner, more integrated solution based on the ISDN Primary Rate Interface (PRI).
"Some time elapsed before I discovered the DIGI RAS30 and RAS4 cards," he says. "I had several failed attempts to convince ISDN card OEMs to change their software to accommodate the rather proprietary V.23 implementation in our payphone. All failed and then my search led me to DIGI via SPS. I was pleasantly surprised to have a visit from the DIGI development manager and sales manager - something was different: not only the determination of SPS management to help find a solution, but senior DIGI representatives as well!"
Pink says DIGI altered its firmware to accommodate the nonstandard version of V.23 used in the payphone.
"After some time we successfully integrated our payphones and front end server with the DIGI RAS30 card. It was a long road to my vision of a PRI interface for our FES, but in January 2000 it became a reality. DIGI has also recently completed an auto-recognition feature on the RAS30 cards to enable either a V.22 or V.23 payphone to call into the FES."
Pink says DIGI's readiness to address the SA market and solve the problem of the non-standard implementation of V.23 modem, and the personal involvement of SPS management, was the key to the solution. "Without their efforts we would not have it on the table today," he concludes.
For further information contact Martin Kuhlmann, SPS South Africa, (021) 794 3952, martink@sps.co.za
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| DUAL-BAND GSM PRE-PAID PUBLIC PHONE, AN AFFORDABLE CELLULAR TELEPHONY SOLUTION | ||
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| In the face of growing demand for accessible
voice communications in developing markets, Tellumat has developed a
new dual-band GSM pre-paid public phone aimed at providing an
affordable entry into the world of cellular telephony.
Tellumat’s history in payphones dates back to 1996 after winning a contract to supply Telkom SA with outdoor cardphones manufactured under license from Anritsu Corporation, Japan. To date, Tellumat have supplied 105 000 of these units to Telkom as well as 35 000 indoor coin payphones. Tellumat have now gone one step further and developed a GSM core, making it one of the most advanced payphones on the market - a cost effective solution for wide and secure access to a broad section of the population for operators rolling out GSM networks into Africa. GSM provides a means of rapidly addressing requirements for universal access and is set to grow in Africa from 2% of the world market in 2000 to nearly 4% by 2004, a growth of 40 million subscribers. Advanced pay-phones can provide broad communications access to even the poorest communities. In the new payphone, Anritsu and Tellumat have combined the latest GSM and payment technology to offer GSM and payphone operators a product with low cost of ownership and multiple payment options aimed at fuelling growth of GSM in Africa and other emerging markets. The GSM payphone enables operators to rapidly offer telephony to large populations with either cash, prepaid IC cards or, as users move up the value chain in search of improved features, SIM cards that offer the user a telephone number, phone book, voicemail and SMS capabilities. |
THE ULTIMATE GSM PAYPHONE
MP
CELL (PTY) Ltd
Mobile
: +27
83 645 4191
Tel
: +27 12 322 9022
Fax
: +27 12 320 2560
e
– mail- johan@mpcell.com
Our
company MPCELL is based in Pretoria (South Africa) and manufactures GSM
public phones. We have been in existence for a year with a record rollout
by a new company of about 4000 units in less than 12 months.
Our
strength lies in service, as we understand the demand put on companies
from their customers.
We
outsource research and development to the experts who do similar work for
VODACOM, MTN and CELL C. Our focus has been to exceed customer expectation
with regards to quality, delivery time, and software responsiveness to
functionality and ease of use.
We
are a very flexible company. Our three products have been ICASA approved,
VODACOM and MTN accredited.
Training
and full support will be offered to Companies taking this opportunity
The
public phone industry is one of the fastest growing industries currently
worldwide.
Therefore
we would like to introduce this business to your company.
We
would be glad to hear from you at your earliest convenience in order to
discuss more about this opportunity.
Should
you have any queries, please do not hesitate to contact me.
Yours
faithfully,
Johan Pretorius – MPCELL
OTHER ACCESSORIES
1.
REMOTE
DISPLY UNIT.
2.
BATTERY.
3.
ARIEL.
4.
ALL
CABLES (FOR POWER SUPPLY AND BATTERY).
5.
TELEPHONE
HANDSET.
POWER
REQUIREMENTS
The
system can use an external 220VAC source, or run from a 12V battery. 
Tim Johnson