Regional Offices: UK   Tanzania   Zambia   Ghana
   |  |  | 
 

Service Self-Select
     
about

consultancy

services

technology

solutions

clients

links

contacts

datasheets
 


Land-Line Dial-Up

Terminal Phone
Cost Dial-Up Modem
Local or national telephone charges
Features Single Voice
Up to 56Kbps data dependent online quality
For Lowest cost solution where available and reliable
Most PCs and laptops have a modem fitted
Against Reliability & quality may be poor
Lines may be unavailable
Does not follow the reporter to new office or new story
Slow for very large files
Could have a large phone bill at the end of the month if used inappropriately – HR and financial control issue
Comment Always the benchmark and least cost starting point when available. If data speeds of 19900 – 56K are required, and only for short durations each day then land-line should always be considered.



GSM Dial-Up

Terminal Cell phone
Cost Cell phone handset
Local or national telephone charges
Features Single Voice
Up to 9.6Kbps data dependent online quality
For Flexible locations
May enable reports to be filled directly from the field, without return to office
Pre-pay billing to control costs is available
Interfaces directly to a laptop or some PDA’s
Against GSM coverage not 100% national
GSM data service is not always consistent even where there is basic coverage
Slow for very large files
Comment Slow for data traffic but very flexible in terms of location, and connecting to different systems, where data coverage is available. General Packet Radio Systems (GPRS) are starting to become available which can provide an 'always-on' internet service in conjunction with GSM phone capabilities.



Thuraya and Irudium: Satellite Phone Dial-Up Connectivity

Product data sheet (Thuraya)
Product data sheet (Iridium)

Terminal Either a hand-held design or a unit which is approx. laptop size.
Image: Iridium Phone
Image: Mini M Phone
Features Single voice
2.4 - 9.6 Kbps data
Dial-Up Networking
Compression software for text emails
Header review options
IMAP or POP3 access to email
Web browsing and FTP possible
Various tariff options : pre-pay, pay as you go, fixed monthly tariffs
For World-wide coverage possible with certain networks
Portable, can operate from flexible locations
Interfaces directly to laptop or PC
Proven field equipment for journalists
Pay only when need to use the system – no story, no cost
Against Dial-up, circuit switched system, payable by the minute
Slow, and hence expensive for large files
Only small attachments possible
Comment

Proven technology for mobile, transportable and field applications
E mail capable but slow for general data use.
However as a back-up or system that’s only occasionally used, the pay-as-you-go feature can be attractive.

More Info Product data sheet (Thuraya)
Product data sheet (Iridium)




SatIP: A Low Cost VSAT With Internet Connection

Product data sheet (SatIP)

Terminal
Small satellite dish and indoor unit connected to PC or small LAN.
Various manufacturers and many service providers. Dish usually 1.2 – 1.8m

Image: VSAT equipment using 1.8m dish
Features Internet connection, using shared bandwidth to reduce costs
Ethernet connection into PC or laptop
“Always on” so large files can be sent overnight, or over a longer period of time
Open connection to the Internet
Ku-band so some issues with availability in heavy rain conditions
Fixed to building
May offer VoIP
May offer other IP capabilities such as VPN
All traffic goes to central international hub for routing, so national traffic is double hopped
For Full web coverage
Good starter kit for small offices 1 – 4 PCs
•'Always-on'- no dial-up and no phone line needed
Lower cost data rates, up to 384Kbps
In some cases can fix or guarantee data rates to enhance usability
Against The cheapest tariff, of the cheapest systems, are usually so over-subscribed
Loss of service in heavy rain conditions
Can be slow at certain times of day due to shared nature of bandwidth
Probably too slow to operate VPN to access secure web sites without time-out issues
Provides an open pipe to the Internet, so anti-virus is required per PC, and firewall if connected to a local LAN
Comment Good solution for small, self contained offices, who want to be independent of local telco, need email and limited web access, provided users understand limitations.
More Info Product data sheet (SatIP)




SatWidth and SatWise: High Performance VSAT With Internet Connection

Product data sheet (SatWidth)
Product data sheet (SatWise)
Product flyer (SatWise)

Terminal Small satellite dish and indoor unit connected to PC or laptop. Various manufacturers and many service providers. Dish usually 1.8m – 2.4m

Image: Satellite Modem
Image: VSAT dish

Once a site has a requirement for more networking solutions, but is seeking an off-the-shelf solution, then the chosen VSAT terminal can be combined with the AfriConnect SatWise product, to provide instant networking LAN management, firewalling, content management, power supply protection and filtering in a single box.
Features

Ethernet connection to router, PC or laptop
VPN, IPsec, DHCP, VoIP, IP compression, PSTN
Open connection to the Internet
“Always on” so large files can be sent, and higher data rates so transfer is quick
C-band so no rain fade issues, high availability.
Fixed to building.
All traffic goes to central international hub for routing, so national traffic is double hopped

For

Full country coverage
IP functionality
Higher speed connection
Higher reliability
"Always on"
•No phone line needed

Against Higher start-up cost
Higher monthly recurring cost associated with higher data rates
Need to select service provider with care to ensure that QoS on shared carrier is high
Comment Ideal Small to Medium Enterprise (SME) and Corporate solution with higher speeds and VPN capabilities
More Info

Product data sheet (SatWidth)
Product data sheet (SatWise)
Product flyer (SatWise)




Private Networks: Private VSAT Solution

Product data sheet (Private Networks)

 

Terminal

Determined only by the business requirements, can be 1.2m – 4.5m terminals, located on poles, roofs, trailers, vehicles and evenships.

Image: Private VSAT dish installation
Features

Any to any connectivity, at any affordable bandwidth.
Choice of frequency, dish size, data rates, architecture and encapsulation.
Fully flexible, corporate solutions

For Client organisation has complete control over bandwidth, choice of hardware, cost per month
Very resilient, secure communications
Against Although bandwidth can be shared across a company, there is no general sharing so bandwidth charges tends to be higher initially than a shared solution
Comment Private networks are required for specific, or secure customer requirements, where single hops for data, or voice traffic are a firm requirement, or where routing through the Internet is unacceptable for security reasons, or where a company is establishing a corporate WAN.For these users satellite links are used to bypass terrestrial bottlenecks or establish international circuits without using the local PTT. The satellite links are the basis of the their WAN, rather than just a source of Internet connectivity.
More Info Product data sheet (Private Networks)
 
On this page:

   -Land-Line Dial-Up
   -GSM Dial-Up
   -Thuraya And Iridium
   -SatIP
   -SatWidth and SatWise
   -Private Networks


 


Connectivity Solutions for a Developing World

 

  Back to top of page

 |  |  | Accessibility

© AfriConnect Ltd 2011