Decoupling Services Twilio SIP Trunk Deployment Routing and Performance Emergency Services Case Study: Twitter

1. a
BUILD YOUR OWN CLOUDENTERPRISE VOIP USING TWILIO SIP TRUNKING

2. STEVEN PLATT |
ABOUT ME
Steven Platt
Engineer on the Systems Engineering team at Twitter and is architect of the
companies global phone network.
10 years experience in Network Engineering, Unified Communications, and
Distributed Systems.

3. THE STRUGGLE: VOIP Y U NO SCALING?!
TRADITIONAL TELECOM CARRIERS
DO NOT SCALE
Regulation & Market Availability
Location Dependence
Hardware Incompatibility
Expensive
Long Lead Time for Delivery
STEVEN PLATT |

4. YOU HAVE BECOME THE
STEVEN PLATT |

5. AGENDA
STEVEN PLATT |
Decoupling Services
Twilio SIP Trunk Deployment
Routing and Performance
Emergency Services
Case Study:Twitter

6. DECOUPLING SERVICES
Framework for scaling adaptable networks
Vendor agnostic
On demand services
Customizable, not Custom (modular)
Scales in depth and breadth
STEVEN PLATT |

7. AGENDA
STEVEN PLATT |
Decoupling Services
Twilio SIP Trunk Deployment
Routing and Performance
Emergency Services
Case Study:Twitter

8. ADMINISTERING TRUNKS IN THE TWILIO
STEVEN PLATT |

9. POST /TRUNKS
CURL -XPOST HTTPS://TRUNKING.TWILIO.COM/V1/TRUNKS
-D "FRIENDLYNAME=SIPISAWESOME"
-U '{TWILIO ACCOUNT SID}:{TWILIO AUTH TOKEN}’
POST /TRUNKS/{TRUNK SID}/CREDENTIALLISTS
CURL -XPOST HTTPS://TRUNKING.TWILIO.COM/V1/TRUNKS/{TRUNK SID}/
CREDENTIALLISTS
-D "CREDENTIALLISTSID=XXX"
-U '{TWILIO ACCOUNT SID}:{TWILIO AUTH TOKEN}’
POST /TRUNKS/{TRUNK SID}/IPACCESSCONTROLLISTS
CURL -XPOST HTTPS://TRUNKING.TWILIO.COM/V1/TRUNKS/{TRUNK SID}/
IPACCESSCONTROLLISTS
-D "IPACCESSCONTROLLISTSID=XXX"
-U '{TWILIO ACCOUNT SID}:{TWILIO AUTH TOKEN}'
Use a unique trunk for
each office location,
granular reporting &
control
< CODE SAMPLE >
</ CODE SAMPLE >
BUILDING
YOUR
STEVEN PLATT |

10. YOUR NAME | TWITTER
POST /TRUNKS/{TRUNK SID}/PHONENUMBERS
CURL -XPOST HTTPS://TRUNKING.TWILIO.COM/V1/TRUNKS/{TRUNK SID}/
PHONENUMBERS
-D "PHONENUMBERSID=XXX"
-D "PHONENUMBERSID=XXX"
-D "PHONENUMBERSID=XXX"
-D "PHONENUMBERSID=XXX"
-U '{TWILIO ACCOUNT SID}:{TWILIO AUTH TOKEN}'
Provision numbers in bulk
for office phone service
deployments
< CODE SAMPLE >
</ CODE SAMPLE >
NUMBER
PROVISI

11. YOUR NAME | TWITTER
GET ONE MONTH USAGE - INBOUND CALLS
$ CURL -G HTTPS://API.TWILIO.COM/2010-04-01/ACCOUNTS/
ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/USAGE/RECORDS.JSON
-D "CATEGORY=CALLS-INBOUND"
-D "STARTDATE=2012-09-01"
-D "ENDDATE=2012-09-30"
-U 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:{{ AUTH_TOKEN }}’
GET ONE MONTH USAGE - OUTBOUND CALLS
$ CURL -G HTTPS://API.TWILIO.COM/2010-04-01/ACCOUNTS/
ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/USAGE/RECORDS.JSON
-D "CATEGORY=CALLS-OUTBOUND"
-D "STARTDATE=2012-09-01"
-D "ENDDATE=2012-09-30"
-U 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:{{ AUTH_TOKEN }}'
Get call volume, cost,
and, other usage
reporting with Twilio’s
Elastic SIP Trunking
“Usage” API’s
< CODE SAMPLE >
</ CODE SAMPLE >
SIP
TRUNKIN

12. VIEWING USAGE IN THE TWILIO PORTAL
STEVEN PLATT |

13. AGENDA
STEVEN PLATT |
Decoupling Services
Twilio SIP Trunk Deployment
Routing and Performance
Emergency Services
Case Study:Twitter

14. DIAL PLANNING
Order numbers in continuous blocks
Specify allowed ranges to avoid system extension overlap
Dial full e.164 format to simplify digit manipulation and location dependance
Use least cost routing to terminate calls to Twilio POP closest to destination
[2‐9]11|011XXX.T|[2‐9]XXXXXXXXX|[2‐9]XX.T
STEVEN PLATT |

15. ROUTING & FAILOVER
Geolocate network egress to closest Twilio POP
Avoid ‘hair pinning' calls in Hub & Spoke networks
Round trip time must not exceed 300ms
Use DNS SRV to allow failover Twilio side
_sip._udp.amersip.company.com 86400 IN SRV 20 1 5060 amer-proxy-west.company.com
_sip._udp.amersip.company.com 86400 IN SRV 30 1 5060 amer-proxy-east.company.com
STEVEN PLATT |

16. AGENDA
STEVEN PLATT |
Decoupling Services
Twilio SIP Trunk Deployment
Routing and Performance
Emergency Services
Case Study:Twitter

17. YOUR NAME | TWITTER
EMERGENCY SERVICES: 911 & 112
Cloud providers waive emergency call liability
Local termination may be required
Emergency services are highly regulated
US has e911 regulation requiring desk location tracking in some states
e112 regulation is pending in Europe
Developing markets often use manual PSAP routing (operators)

18. YOUR NAME | TWITTER
EMERGENCY SERVICES: 911 & 112

19. AGENDA
STEVEN PLATT |
Decoupling Services
Twilio SIP Trunk Deployment
Routing and Performance
Emergency Services
Case Study:Twitter

20. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
VIRTUALI
ZED

21. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
VIRTUALI
ZED

22. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
VIRTUALI
ZED

23. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
VIRTUALI
ZED

24. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
TWILIO SIP
TRUNKING

25. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
TWILIO SIP
TRUNKING

26. YOUR NAME | TWITTER
TWITTER: REMOTE DEPLOY & SHORETEL UC
Direct PSAP routing outside US
e911 support in United States
Intrado ‘911Enable’ for desk location tracking in regulated US states
Call back numbers on all devices
EMERGENCY
LOCATION

27. YOUR NAME | TWITTER
A BETTER UC CLOUD: POWERED BY TWILIO
DEPLOYMENT
SUMMARY
FASTER REMOTE
DEPLOYMENT
WIDER COVERAGE
LOWER TOTAL COST
FULLY VIRTUAL
LOCATION INDEPENDENT
EMERGENCY SERVICES
SUPPORTED
_________________________
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TWILIO SIP TRUNKING

28. ANY QUESTIONS?

29. STEVEN PLATT @STEVENPLATT