Lisa Weitekamp - associate product manager at Twilio - takes you through time tested best practices and taboos for phone numbering worldwide. Essential knowledge for the global Twilio developer.

1. #TWILIOCON
Global Phone Numbers:Takingyour
AppAroundtheWorld
LISA WEITEKAMP, ASSOCIATE PRODUCT MANAGER, TWILIO
Wednesday, September 25, 13

2. #TWILIOCON
Hi. I’m Lisa.
I <3 Twilio Phone Numbers.
Wednesday, September 25, 13

3. #TWILIOCON
Phone Numbers
Team
Inventory
Management
Quality
Management
Phone
Number APIs
Wednesday, September 25, 13

4. #TWILIOCON
By 2030, the global middle class will more
than double in size.1
This is 200% spending growth spending in
the next decade alone.2
1. Sargent, Ben "Language Spark Business Success" 5 Dec. 2012 (http://vimeo.com/55103353)
2. Court, David and Narasimhan, Laxman "Capturing the World’s Emerging Class" 10 Jul. 2010 (http://www.mckinsey.com/insights/consumer_and_retail/capturing_the_worlds_emerging_middle_class)
Wednesday, September 25, 13

5. #TWILIOCON0 200 400 600 800 1000 1200
Baidu
Tencent
Glam Media
Apple
Amazon.com
Wikipedia
Yahoo!
Facebook
Microsoft
Google
US Visitors
International Visitors
81% of Visitors to the top 10 global Internet
Properties are from outside the US
1. Meeker, Mary and Wu, Liang "2013 Internet Trends" 29 May 2013 (http://www.kpcb.com/insights/2013-internet-trends)
#TWILIOCON
Wednesday, September 25, 13

6. #TWILIOCON
Not onlyisthefuture global in nature...
so isthe present.
Wednesday, September 25, 13

7. #TWILIOCON
Agenda
•Phone number formatting
•Phone number types and uses globally
•International Number Taboos
•Global Twilio features
Wednesday, September 25, 13

8. WHY ARE PHONE NUMBERS HARD?
Image courtesy of: http://atomictoasters.com/2010/12/startup-human-technology/
Wednesday, September 25, 13

9. #TWILIOCON
+1 347 222 1111
+39 042 2222 1111
+682 4 2211
Wednesday, September 25, 13

10. #TWILIOCON
+1 347 222 1111
+39 042 2222 1111
+682 4 2211
Wednesday, September 25, 13

11. #TWILIOCON
+1 347 222 1111
+39 042 2222 1111
+682 4 2211682
1
39
Wednesday, September 25, 13

12. #TWILIOCON
+1 347 222 1111
+39 042 2222 1111
+682 4 22114
347
042
Wednesday, September 25, 13

13. #TWILIOCON
+1 347 222 1111
+39 042 2222 1111
+682 4 22112211
222 1111
2222 1111
Wednesday, September 25, 13

14. Geographic or Local Phone Numbers
National Phone Numbers
Mobile Phone Numbers
Toll Free Phone Numbers
Short Codes
Wednesday, September 25, 13

15. Geographic or Local Phone Numbers
National Phone Numbers
Mobile Phone Numbers
Toll Free Phone Numbers
Short Codes
Wednesday, September 25, 13

16. #TWILIOCON
If locality matters...
Wednesday, September 25, 13

17. #TWILIOCON
If locality matters...
Geographic Phone Numbers
(aka Local or Landline)
Wednesday, September 25, 13

18. #TWILIOCON
If cost to the caller matters...
Wednesday, September 25, 13

19. #TWILIOCON
If cost to the caller matters...
Geographic Phone Numbers
Wednesday, September 25, 13

20. #TWILIOCON
If cost to the caller matters...
Geographic Phone Numbers
Toll free Phone Numbers
Wednesday, September 25, 13

21. #TWILIOCON
If cost to the caller matters...
Geographic Phone Numbers
Toll free Phone Numbers
National Phone Numbers
Wednesday, September 25, 13

22. #TWILIOCON
If messages matter...
Wednesday, September 25, 13

23. #TWILIOCON
If messages matter...
Geographic Phone Numbers
Wednesday, September 25, 13

24. #TWILIOCON
If messages matter...
Geographic Phone Numbers
Mobile Phone Numbers
Wednesday, September 25, 13

25. #TWILIOCON
If messages matter...
Geographic Phone Numbers
Mobile Phone Numbers
Short Codes
Wednesday, September 25, 13

26. #TWILIOCON
+1 415 742 1915
Wednesday, September 25, 13

27. #TWILIOCON
+1 415 742 1915+1
Wednesday, September 25, 13

28. #TWILIOCON
+1 415 742 1915+1 415
Wednesday, September 25, 13

29. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759
Wednesday, September 25, 13

30. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759+44
Wednesday, September 25, 13

31. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759+44 20
Wednesday, September 25, 13

32. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759
+44 800 808 5156
Wednesday, September 25, 13

33. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759
+44 800 808 5156+44
Wednesday, September 25, 13

34. #TWILIOCON
+1 415 742 1915
+44 20 3475 2759
+44 800 808 5156+44 800
Wednesday, September 25, 13

35. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+44 800 808 5156
Wednesday, September 25, 13

36. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+44 800 808 5156
+44
Wednesday, September 25, 13

37. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+44 800 808 5156
+44 7
Wednesday, September 25, 13

38. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+44 800 808 5156
+44 77
Wednesday, September 25, 13

39. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+33 9 75 18 35 11
+44 800 808 5156
Wednesday, September 25, 13

40. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+33 9 75 18 35 11
+44 800 808 5156
+33
Wednesday, September 25, 13

41. #TWILIOCON
+1 415 742 1915
+44 77 77 777 777
+44 20 3475 2759
+33 9 75 18 35 11
+44 800 808 5156
+33 9
Wednesday, September 25, 13

42. #TWILIOCON
7
13
4
17
Wednesday, September 25, 13

43. SO HOW DOES TWILIO HELP?
Image courtesy of: http://atomictoasters.com/2010/12/startup-human-technology/
Wednesday, September 25, 13

44. #TWILIOCON
Wednesday, September 25, 13

45. #TWILIOCON
Wednesday, September 25, 13

46. #TWILIOCON
<Say>Supports 26 dialects which
covers 79% of the world’s
online population.1
1. Sargent, Benjamin "ROI Lifts the Long Tail of Languages in 2012" 26 Jun. 2012 (http://www.commonsenseadvisory.com/abstractview.aspx?articleid=2899)
</Say>
Wednesday, September 25, 13

47. #TWILIOCON
“The buck does funny things when does are present.”
$item
=
preg_replace(‘/does/’,
‘doze’,
$item);
Pronunciation > Correct spelling
Wednesday, September 25, 13

48. #TWILIOCON
<Play> + <Say> + <Pause> = Win!
Wednesday, September 25, 13

49. #TWILIOCON
GSM-7 and UCS2 character sets
Support for 100% of existing
written scripts.
SMS Character Encoding
Wednesday, September 25, 13

50. Oregon
Virginia
Sao Paulo
Dublin
Tokyo
Singapore
GLOBAL LOW LATENCY
Wednesday, September 25, 13

51. #TWILIOCON
Consumers are aware of number
types and you should be too.
When selecting a number, avoid
local cultural taboos.
Twilio is here to help you!
Wednesday, September 25, 13

52. #TWILIOCON
Consumers are aware of number
types and you should be too.
When selecting a number, avoid
local cultural taboos.
Twilio is here to help you!
Wednesday, September 25, 13

53. QUESTIONS?
Wednesday, September 25, 13

54. @lweite
lisa@twilio.com
<Say
language=en>Thank
You!</Say>
<Say
language=fr-­‐FR>Mercí!</Say>
<Say
language=sv-­‐SE>Tak!</Say
Wednesday, September 25, 13