This document discusses building sustainable last mile networks for voice services in South Africa. It outlines various last mile technologies available in SA like ADSL, leased lines, mobile broadband, and fiber, along with their challenges. These include unreliable latency, throughput, and packet loss. The document recommends using Asterisk to combat these challenges and deliver high quality voice services nationally by blending multiple last mile technologies. Lastly, it concludes that telephony providers will need to blend last mile networks and use Asterisk to its full potential to offer reliable voice services despite technological limitations.

1. Building Sustainable Last Mile Networks
for Voice in South Africa
Presented by
Michael Colin
Sales Director, BitCo

2. PANEL
Garth Van Sittert - BitCo
Founder and CEO
David Herselman - Syrex
Managing Director
Tony Russel - Clarotech
Group Technical Director

3. About BitCo

4. Building Sustainable Last Mile Networks for Voice
• Current Technologies available in South Africa
• Challenges using this technology
• Potential Solutions using Asterisk

5. Common Last Mile Networks
Available In SA

6. ADSL
Asymmetric Digital Subscriber Line

7. ADSL
Asymmetric Digital Subscriber Line
 Copper Technology
 Asymmetric Data Transfer

8. ADSL
Challenges:
Best Effort SLA

9. ADSL
Challenges:
Best Effort SLA
No Guarantee on Latency or Throughput

10. DIGITNET
Leased Line Service
Symmetrical Data Transfer
Low Speeds
Classes of service to Guarantee latency
SLA for uptime and latency

11. DIGITNET
Challenges:
Legacy technology

12. DIGITNET
Challenges:
Legacy technology
Cost for Deployment

13. DIGITNET
Challenges:
Legacy technology
Cost for Deployment
Lead time

14. DIGITNET
Challenges:
Legacy technology
Cost for Deployment
Lead time
Throughput

15. MOBILE BROADBAND, LTE, 3G
Mobile broadband using GSM technology
Asymmetrical data transfer
Medium to high speed dependant on signal and tower capacity
SLA Available for uptime

16. MOBILE BROADBAND, LTE, 3G
Challenges:
No guarantee on latency or throughput due to potential interference

17. MOBILE BROADBAND, LTE, 3G
Challenges:
No guarantee on latency or throughput due to potential interference
Frequency congestion

18. MOBILE BROADBAND, LTE, 3G
Challenges:
No guarantee on latency or throughput due to potential interference
Frequency congestion
Base station congestion

19. MICROWAVE ISM BAND
Industrial, Scientific & Medical Radio Bands
Symmetrical or Asymmetrical data transfer
Medium to high speed dependant on frequency and technology used
SLA Available for uptime

20. MICROWAVE ISM BAND
Challenges:
No guarantee on latency or throughput due to potential interference

21. MICROWAVE ISM BAND
Challenges:
No guarantee on latency or throughput due to potential interference
Frequency sharing and interference

22. MICROWAVE ISM BAND
Challenges:
No guarantee on latency or throughput due to potential interference
Frequency sharing and interference
Line of sight Dependant

23. MICROWAVE LICENSED BAND
Licensed Frequency Radio Band
Symmetrical or Asymmetrical data transfer
Medium to high speed dependant on frequency and technology
SLA Available for uptime, throughput and latency

24. MICROWAVE LICENSED BAND
Challenges:
Spectrum availability

25. MICROWAVE LICENSED BAND
Challenges:
Spectrum availability
Spectrum costs

26. MICROWAVE LICENSED BAND
Challenges:
Spectrum availability
Spectrum costs
Equipment costs

27. MICROWAVE LICENSED BAND
Challenges:
Spectrum availability
Spectrum costs
Equipment costs
Line of Sight dependant

28. MICROWAVE LICENSED BAND
Challenges:
Spectrum availability
Spectrum costs
Equipment costs
Line of Sight dependant
Regulatory challenges

29. FIBRE
Licensed Frequency Radio Band
Symmetrical data transfer
high speed
SLA Available for uptime, throughput and latency

30. FIBRE
Challenges:
Cost for Deployment & Access build

31. FIBRE
Challenges:
Cost for Deployment & Access build
Lead time

32. FIBRE
Challenges:
Cost for Deployment & Access build
Lead time
Availability of Fibre

33. Common Challenges…
…Associated with the last mile technology
• Jitter – Garth van Sittert
• Packet Loss – Tony Russel
• Latency – Garth van Sittert
• Erratic /fluctuating connection speed – David Herselman

34. Table Discussion
Experiences and solutions using Asterisk for unreliable last
mile access
David Herselman, Syrex
Garth Van Sittert, BitCo
Tony Russell, Clarotech

35. Conclusions
1.
Telephony providers will need to use
blends of Last Mile Networks
in order to deliver voice services
on a National basis
for all types of customers.

36. Conclusions
2.
Providers will be faced with
several challenges when using blends of technology.
It is important to use Asterisk to its full potential
to combat the challenges and offer customers
the highest quality with committed uptime.

37. Thank You
Michael Colin
Sales Director,
BitCo
@BitCo_SA
info@bitco.co.za
bitco.co.za
za.linkedin.com/in/michaelcolinbitco