Greatest Coverage for Lower Cost
CDMA's spread spectrum signal provides the greatest coverage in the wireless industry, allowing networks to be built with far fewer cells sites than is possible with oyher wireless technologies. Fewer cell sites translates to reduced operating expenses, which results in savings to both operators and consumers.

Packet data
CDMA networks are built with standard IP packet data protocols. Other networks require costly upgrades to add new data equipment in the network and will require new data phones. Standard cdma one phones already have TCP/IP and PPP protocols built into them.

Longer Talk Time, Longer Battery Life and Smaller Phones
You can leave your phone on with CDMA. CDMA uses power control to monitor the amount of power your system and handset need at any time . CDMA handsets typically transmit at the lowest power level in the industry, allowing for longer battery life which results in longer talk time and standby time. CDMA handsets can also incorporate smaller batteries, resulting in smaller, lighter-weight phones, Easier to carry and easier to use.

Fewer Dropped Calls
CDMA's patented " soft handoff," method of passing calls between cells sharply reduces the risk of disruption or dropped calls during a handoff. The process of soft handoff leads to fewer dropped calls as 2 or 3 cells are monitoring your call at any given time.

Improved Security and Privacy
CDMA's digitally encoded, spread spectrum transmissions resist eaves dropping.
Designed with about 4.4 trillion codes, CDMA virtually eliminates cloning and other types of fraud.

Greater Capacity

CDMA allows the largest nimber of subscribers to share the same radio frequencies, helping service providers increase their profitability. CDMA uses spread spectrum technology which can provide up to 10-20 times the capacity of analog equipment and more than three times the capacity of other digital platforms. With dual-modes phones, CDMa is compatible with other technologies for seamlees widespread roaming coverage.

 Reduced Background Noise and Interference
CDMA combines multiple signals and improves signal strength. This leads to the near eliminmation of interference and fading. Both electrical background noise (computer noise) and acoustic background noise (background conversations) are filtered out by using narrow bandwidth which corresponds to the frequency of the human voice. This keeps background noise out of your conversation.

Rapid Deloyment
CDMA systems can be deloyed and expanded faster and more cost effectively than most wireline networks. And because they require fewer cell sites, CDMA networks can be deployed faster than other types of wireless networks

Wide Product Selection
QUALCOMM has licensed CDMA technology to over 65 leading communications manufacturers worldwide, enabling service providers and customers to choose from a wide range of highly advanced, cost-competitive, CDMA-based products.

Continuing Advances
CDMA technology enables users to access a wide range of new services, including caller identification, short messaging services and Internet connections. Simultaneously voice and data calls are also possible nusing CDMA technology.

Continuing technology Advances
The world's most advanced digital wireless technology , the flexible standard functions in three modes-- Multi-carrier, Direct Spread, and Time Division Duplex-- and operates with ANSI-41 and GSM- MAP networks.

With CDMA as the Industry's single standard, carriers across the globe benefit from greater choice in equipment, lower prices, and the ability to deploy equipment and services faster than ever before.
 

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ISDN

INTERGRATED SERVICE DIGITAL NETWORK (ISDN)

ISDN IS A GOOD VALUE FOR MONEY If we are talking about ISDN we are talking about speed, efficiency and less expenditure, which comes down to good value for money. ISDN is a system of digital phone connections, which allows data to be transmitted simultaneously across the world using end-to-end digital connectivity. It travels eight to ten times faster than the today's modem. ISDN allows multiple digital channels to be operated simultaneously through the same regular phone used for analog lines. Therefore nothing will change in the physical wiring but a digital signal will be needed, thus it takes an ISDN line half the time it takes an analog line to convey the same call and this improves response for interactive applications, such as games. With ISDN one line can be use for multiple devices where as before separate lines were needed for each device and one can be using all devices connected to one line at the same time.

All the above facilities attributed to analogue subscribers are acailable for digital (ISDN) subsriber, However additional facilities are also available for ISDN Subscriber.

1. ADVICE OF CHARGING DURING CALL. The AOC-D supplementary service shall apply to basic access and primary rate access. It provides the served user with cumaulatiove charing infoemation during the call. The charge information given shall relate to the charges incurred on the network to which the served user is attached.

2. ADVICE OF CHARGING AT THE END OF A CALL. The AOC-D supplementary service shall apply to basic access and primary rate access. It provides the served user with charging information far a call when the call is terminated. The infromation can be sent for all calls.

Asymmetrical Digital Subscriber Line

High speed data transfer
Access to remote databases
Access to specialised networks
Interactive video (video games, etc.)
Higher picture resolution
Always-on, no need for dial-up
Real-time email, etc.

Frequently Asked Questions:

Q: What is ADSL?

A: ADSL stands for Asymmetric Digital Subscriber Line. It is a technology that allows normal copper telephone wires (sometimes known as a twisted pair) to provide a Broadband service.

Q: What is broadband?

A: Broadband is a generic term meaning that the connection referred to has the capacity to transmit large amounts of data at a high speed. When connected to the internet, this allows information to be transferred much faster than a conventional modem or narrowband connection.

Q: Will there be a product for home use and business use?

A: Yes, there are two types of ADSL Services:

Hendu : This is suitable for home use and SOHOs

Melah : This is suitable for corporations and medium-sized businesses.

Q: How much will it cost?

A: For Hendu, there is no self-installation option. The cost of the modem is D …
Product Self Instal-lation Charge Mthly rental(Bus.) MthlyRental(home) Down/up load speed Features
Hendu 256 YesNo D500D1000 D15,000D15,000 D3,000D3,000 256/128 Home version for PCs
Hendu 500 YesNo D500D1000 D20,000D20,000 D5,000D5,000 512/128 Home version for PCs

For Melah, there is an option for self-installation. The Router needed costs D …
Product Self Instal-lation. Charge Mthly rentalFee+st Down/up load speed Features
Melah 1000 YesNo D1000D1500 D25000D25000 1000/2561000/256 Business basic, fast web browsing, multiple user connections via ehternet port . ideal for ISP’s.
Melah 2000 YesNo D1000D1500 D30000D30000 2000/5122000/512 Fixed IP address for permanent web presence, large file transfer, heavy downloading capacity needed

Q: will I have to buy a separate ASDL modem or router?

A: Yes. For single computer connections, a modem is needed. For multiple computer connections, a router is needed.

Q: What sort of connection does my computer need?

A: With the modem, you need a USB Port and with the router, you will need an Ethernet Port.

Q: What is the minimum specification for my computer?

A: It is recommended that your computer have at least a Pentium 3 processor and 128 megs of RAM.

Q: is distance a problem?

A: Yes. The service can only be given to customers within a 3km radius of the Telecoms exchange.

Q: what is contention ratio?

A: Bandwidth across the Gamtel Network is shared amongst users. The degree of sharing is called the contention ratio. ASDL contention ratio is ….

Q: Do I have to have a new line for this service?

A: No. ADSL will run on top of your existing telephone line, which will continue to be billed as normal. A separate broadband connection and rental charge will apply for the extra equipment we require to provide the service.

Q: Will my normal telephone work as usual?

A: Yes, ADSL runs ‘on top’ of your normal telephone, so you can make voice calls and send faxes as usual at the same time as surfing the internet.

Q: Is Broadband better than ISDN?

A: Not necessarily. Broadband can run faster than ISDN, but it is shared, whereas ISDN is a point to point dial-up connection with a constant speed. Generally, ISDN has a smaller bandwidth, whilst ADSL has a larger bandwidth and offers higher picture resolution. Thus one can send things faster with ADSL than ISDN but the usage depends on the volume of data transfer generally required.

Q: What about security?

A: To get announced to the internet, you must log on using your user name and password. However, once you are connected you are effectively available to the world – even if you have a dynamic IP address. You are thus encouraged to install a firewall.

Q: What should I do to have ADSL now?

A: Call …

For further assistance, please do not hesitate to call 422-5262 or 121.

TO Improve productivity AND reduce costs.

1. What is VPN ?

Private networking involves securely transmitting corporate data across multiple sites throughout an entire enterprise.

A virtual private network (VPN) is one means of accomplishing a truly private corporate network using the Internet Protocol (IP)

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