Expanding Internationally                             po                                s   si                            ...
Challenges●   Signaling    ●   Establishing the call    ●   Connecting/interop with carriers around the world●   Media (Au...
Latency●   Make sure that media takes the shortest route    possible – no matter where the users reside    ●   Less latenc...
Things can change!●   Have to be capable of changes mid-call                                             jonas@twilio.com ...
Deploy Media Capabilities                  Everywhere●   Essentially:                        carrier    ●   B2BUA:s for tr...
Carrier Interop + Media Features●   In our experience:    ●   Carriers do not in general support re-invites    ●   Transco...
THE END          jonas@twilio.com          @borjessonjonas
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Mobicents Summit 2012 - Twilio Expanding internationally Challenges Solutions

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Mobicents Summit 2012 - Twilio Expanding internationally Challenges Solutions

  1. 1. Expanding Internationally po s si bl e Challenges & Solutions Jonas Borjesson Tech Lead – All things SIP jonas@twilio.com @borjessonjonas
  2. 2. Challenges● Signaling ● Establishing the call ● Connecting/interop with carriers around the world● Media (Audio Quality) ● Delay ● Jitter (drop-outs) ● Strange audio artifacts● Numbering ● People are used to certain number series ● Different laws around the world jonas@twilio.com @borjessonjonas
  3. 3. Latency● Make sure that media takes the shortest route possible – no matter where the users reside ● Less latency ● Minimizes risk for jitter jonas@twilio.com @borjessonjonas
  4. 4. Things can change!● Have to be capable of changes mid-call jonas@twilio.com @borjessonjonas
  5. 5. Deploy Media Capabilities Everywhere● Essentially: carrier ● B2BUA:s for traffic ● Relays for media lb● Note: ● Carrier is not re-invited b2bua ● Media is not p2p Why not??? 1 3 2 Signaling Media jonas@twilio.com @borjessonjonas
  6. 6. Carrier Interop + Media Features● In our experience: ● Carriers do not in general support re-invites ● Transcoding between carriers also● Users... ● wish to record the audio ● use DTMF for controlling the call (hangup-on star) jonas@twilio.com @borjessonjonas
  7. 7. THE END jonas@twilio.com @borjessonjonas
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