Building Sustainable Last Mile Networks

for Voice in South Africa

Presented by

Michael ColinSales Director, BitCo

PANEL

Garth Van Sittert - BitCoFounder and CEO

David Herselman - SyrexManaging Director

Tony Russel - ClarotechGroup Technical Director

About BitCo

Building Sustainable Last Mile Networks for Voice

• Current Technologies available in South Africa

• Challenges using this technology

• Potential Solutions using Asterisk

Common Last Mile Networks Available In SA

ADSL

Asymmetric Digital Subscriber Line

ADSL

Asymmetric Digital Subscriber Line

Copper Technology

Asymmetric Data Transfer

ADSL

Challenges:

Best Effort SLA

ADSL

Challenges:

Best Effort SLA

No Guarantee on Latency or Throughput

DIGITNET

Leased Line Service

Symmetrical Data Transfer

Low Speeds

Classes of service to Guarantee latency

SLA for uptime and latency

DIGITNET

Challenges:

Legacy technology

DIGITNET

Challenges:

Legacy technology

Cost for Deployment

DIGITNET

Challenges:

Legacy technology

Cost for Deployment

Lead time

DIGITNET

Challenges:

Legacy technology

Cost for Deployment

Lead time

Throughput

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

MOBILE BROADBAND, LTE, 3G

Challenges:

No guarantee on latency or throughput due to potential interference

MOBILE BROADBAND, LTE, 3G

Challenges:

No guarantee on latency or throughput due to potential interference

Frequency congestion

MOBILE BROADBAND, LTE, 3G

Challenges:

No guarantee on latency or throughput due to potential interference

Frequency congestion

Base station congestion

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

MICROWAVE ISM BAND

Challenges:

No guarantee on latency or throughput due to potential interference

MICROWAVE ISM BAND

Challenges:

No guarantee on latency or throughput due to potential interference

Frequency sharing and interference

MICROWAVE ISM BAND

Challenges:

No guarantee on latency or throughput due to potential interference

Frequency sharing and interference

Line of sight Dependant

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

MICROWAVE LICENSED BAND

Challenges:

Spectrum availability

MICROWAVE LICENSED BAND

Challenges:

Spectrum availability

Spectrum costs

MICROWAVE LICENSED BAND

Challenges:

Spectrum availability

Spectrum costs

Equipment costs

MICROWAVE LICENSED BAND

Challenges:

Spectrum availability

Spectrum costs

Equipment costs

Line of Sight dependant

MICROWAVE LICENSED BAND

Challenges:

Spectrum availability

Spectrum costs

Equipment costs

Line of Sight dependant

Regulatory challenges

FIBRE

Licensed Frequency Radio Band

Symmetrical data transfer

high speed

SLA Available for uptime, throughput and latency

FIBRE

Challenges:

Cost for Deployment & Access build

FIBRE

Challenges:

Cost for Deployment & Access build

Lead time

FIBRE

Challenges:

Cost for Deployment & Access build

Lead time

Availability of Fibre

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

Table DiscussionExperiences and solutions using Asterisk for unreliable last

mile access

David Herselman, Syrex

Garth Van Sittert, BitCo

Tony Russell, Clarotech

Conclusions1.

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.

Conclusions2.

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.

Thank YouMichael ColinSales Director,

BitCo

@BitCo_SA

info@bitco.co.za

bitco.co.za

za.linkedin.com/in/michaelcolinbitco