SIP – Session Initiation Protocol
March, 2014
LP Voice Team
More than meets the
1
Yossi Maimon - LivePerson VOIP Technical Leader
Ofer Cohen - LivePerson VOIP Group Leader
More than 15 years of experien...
1Chapter headings
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4. ...
1Chapter headings
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4. ...
1The IP effect in telecom networks
IP
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
• Mobile
• Phone over IP
1Telecom in a Nutshell
• Analog Networks (PSTN)
Analog, CS,
PSTN as ―telephony Internet‖,
Evolution.
• Digital networks
• ...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
ISDN – Integrated Services Digital Network.
IN services...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
• Mobile
Just the endpoint is ―mobile‖.
Analog, GSM, 3G...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
• Mobile
Just the endpoint is ―mobile‖.
Analog, GSM, 3G...
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
• Mobile
• Phone over IP
LAN
LAN
IP
1Telecom in a Nutshell
• Analog Networks (PSTN)
• Digital networks
• Mobile
• Phone over IP
H.323, Skinny, H.324m, Skype, ...
1
IP as a mediator
LAN
LAN
IP
Telecom in a Nutshell
1
IP as a mediator
LAN
LAN
IP
Telecom in a Nutshell
1
IP as a mediator
LAN
LAN
IP
Telecom in a Nutshell
1Chapter headings:
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4....
1How IP became a mediator network
ISDN
1
ISDN
ISDN
How IP became a mediator network
ISDN
IP
1
ISDN
ISDN
How IP became a mediator network
ISDN
ISDN
IP
1
ISDN
ISDN
How IP became a mediator network
ISDN
ISDN
IP
IP
IP
1
ISDN
ISDN
How IP became a mediator network
ISDN
ISDN
IP
IP
IP
1
ISDN
ISDN
How IP became a mediator network
ISDN
ISDN
LTE / IMS
IP
IP
IP
1How IP became a common mediator network
• Simple Integration with IP networks, decrease
communication cost.
• Phone becam...
1
• Simple / HTTP style.
• Ability to capsulate foreign protocols.
• The dominate architecture for internet integration
ar...
1Chapter headings:
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4....
1One word on IMS
IMS - IP Multimedia Subsystem
1One word on IMS
IMS
Services scheduler
CSCFHSS
ServiceServiceServiceService
1One word on IMS
IMS
Re-router
CSCFHSS
OUT
ServiceServiceServiceService
1One word on IMS
IMS
Adapt networks
according their
abilities.
CSCFHSS
SIP NON SIP
OUT
ServiceServiceServiceService
1Chapter headings
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4. ...
1SIP Protocol
Communication session = Signaling + Media
Signaling: initiating,
Capability exchange,
Media: The content its...
1SIP Protocol
The SIP Define IP Signaling Session.
The session may initiated by:
• IP endpoint (SIP Phone, Click-To-Call, ...
1SIP Protocol
SIP message is HTTP like:
text base.
request response.
head line, headers, body.
Example of Network elements...
1SIP Protocol
SIP Response:
• 1xx—Provisional Responses
• 2xx—Successful Responses
• 3xx—Redirection Responses
• 4xx—Clien...
1SIP Protocol
The Body may contains any type.
SDP: Capability declaration - voice, video, data, application, control, (tex...
1Native basic flow to basic flow
Register BOB
ALICE BOB
200 ok
Invite BOB
200 ok
ACK
BYE
200 ok
Registrar
1SIP INVITE
INVITE sip:bob@lp.com SIP/2.0
Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds
To: Bob <sip:bob@lp.com>
F...
1SIP INVITE – VIA &Contact headers
INVITE sip:bob@lp.com SIP/2.0
Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds
To:...
1SIP INVITE - BODY
INVITE sip:bob@lp.com SIP/2.0
Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds
To: Bob <sip:bob@lp...
1Alice Registers to LP1, BOB to LP2
Register
200 ok 200 ok
RegisterLP1.COM LP2.COM
ALICE BOB
1Alice calls BOB and gets Music on Hold
ALICE BOB
LP2.COM
IVR
LP1.COM
redirect
server
Invite BOB + SDP Alice
200 ok + SDP ...
1redirect the call to LP2
LP2.COM
IVR
LP1.COM
redirect
server
ALICE BOB
1LP1 routes the call to BOB via LP2
ALICE BOB
IVR
Invite BOB + Alice SDP
200 ok with BOB SDP
Invite BOB + LP2 SDP
200 ok L...
1Connect the media between Alice and BOB through LP2
IVR
(re) Invite + LP2 SDP
200 ok
redirect
server
ALICE BOB
LP2.COMLP1...
1Disconnect IVR
IVR
redirect
server
ALICE BOB
LP2.COMLP1.COM
1
LP2.COM
IVR
LP1.COM
redirect
server
ALICE BOB
Connect the media between Alice and BOB through LP2
1Chapter headings
Part 1 1. Telecom in a Nutshell
2. How IP became a common mediator network
3. One word on IMS
Part 2 4. ...
1SIP Content Services
SIP is used by:
• SIP Devices.
• Converters to SIP-Based network:
GW
Soft Switch
SIP-T, SIP-I : prot...
1SIP Content Services
SIP is used by:
• SIP Devices.
• Converters to SIP-Based network:
GW
Soft Switch
SIP-T, SIP-I : prot...
1SIP Content Services
• Unified communication.
• Device hunting (sequential dialing).
• Seamless network switch (VCC, MCM)...
1Example
Alice and Bob Signaling Session
1SIP abilities - Example
Alice Bob
1SIP abilities - Example
Alice BobBob get update in its IM application about Alice location
location
IM applicationLocatio...
1
Alice
SIP abilities - Example
Bob
IM application
Bob get update in its IM application about Alice location
So he sends h...
1
Alice
SIP abilities - Example
BobBob get update in its IM application about Alice location
So he sends her a message.
Al...
1
Alice
SIP abilities - Example
BobBob get update in its IM application about Alice location
So he sends her a message.
Al...
1
Alice
SIP abilities - Example
BobBob get update in its IM application about Alice location
So he sends her a message.
Al...
1
Alice
SIP abilities - Example
BobBob get update in its IM application about Alice location
So he sends her a message.
Al...
1SIP Content Services
• Unified communication.
• Device hunting (sequential dialing).
• Seamless network switch (VCC, MCM)...
1SIP Content Services
IP
Service
DigitalIP
IP Digital
Q & A
Thank you
1
IMS - IP Multimedia Subsystem
Thank you
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SIP - Introduction to SIP Protocol

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SIP - More than meets the eye
Speakers:
Ofer Cohen - VOIP Group Leader, LivePerson
Yossi Maimon - VOIP Technical Leader, LivePerson

An Introduction to the SIP protocol.
SIP Position in telecommunication networks and the content services.
What is SIP:
The Session Initiation Protocol (SIP) is a signaling communications protocol, widely used for controlling multimedia communication sessions such as voice and video calls over Internet Protocol (IP) networks.
The protocol defines the messages that are sent between peers which govern establishment, termination and other essential elements of a call. SIP can be used for creating, modifying and terminating sessions consisting of one or several media streams. SIP can be used for two-party (unicast) or multiparty (multicast) sessions. Other SIP applications include video conferencing, streaming multimedia distribution, instant messaging, presence information, file transfer, fax over IP and online games.
(Source: Wikipedia)

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  • SIP implements a three-way handshake.
  • Transcript of "SIP - Introduction to SIP Protocol"

    1. 1. SIP – Session Initiation Protocol March, 2014 LP Voice Team More than meets the
    2. 2. 1 Yossi Maimon - LivePerson VOIP Technical Leader Ofer Cohen - LivePerson VOIP Group Leader More than 15 years of experience in telecom networks. Especially with conversions systems. About the Presenters FMC, IMS, IFC, IPT, CTI, GW, IN, VSSF, SIPT, MSC GW, SIP Tunneling over Https, Media Transcoding, SIM-IP Softphone
    3. 3. 1Chapter headings Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    4. 4. 1Chapter headings Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    5. 5. 1The IP effect in telecom networks IP
    6. 6. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks • Mobile • Phone over IP
    7. 7. 1Telecom in a Nutshell • Analog Networks (PSTN) Analog, CS, PSTN as ―telephony Internet‖, Evolution. • Digital networks • Mobile • Phone over IP
    8. 8. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    9. 9. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    10. 10. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    11. 11. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    12. 12. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    13. 13. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    14. 14. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    15. 15. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    16. 16. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP
    17. 17. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks ISDN – Integrated Services Digital Network. IN services. GW to PSTN. • Mobile • Phone over IP Analog Network
    18. 18. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks • Mobile Just the endpoint is ―mobile‖. Analog, GSM, 3G Integrated into SS7, use ISDN as GW. 4G • Phone over IP Digital Analog IP
    19. 19. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks • Mobile Just the endpoint is ―mobile‖. Analog, GSM, 3G Integrated into SS7, use ISDN as GW. 4G • Phone over IP Digital Analog IP
    20. 20. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks • Mobile • Phone over IP LAN LAN IP
    21. 21. 1Telecom in a Nutshell • Analog Networks (PSTN) • Digital networks • Mobile • Phone over IP H.323, Skinny, H.324m, Skype, SIP LAN LAN IP
    22. 22. 1 IP as a mediator LAN LAN IP Telecom in a Nutshell
    23. 23. 1 IP as a mediator LAN LAN IP Telecom in a Nutshell
    24. 24. 1 IP as a mediator LAN LAN IP Telecom in a Nutshell
    25. 25. 1Chapter headings: Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    26. 26. 1How IP became a mediator network ISDN
    27. 27. 1 ISDN ISDN How IP became a mediator network ISDN IP
    28. 28. 1 ISDN ISDN How IP became a mediator network ISDN ISDN IP
    29. 29. 1 ISDN ISDN How IP became a mediator network ISDN ISDN IP IP IP
    30. 30. 1 ISDN ISDN How IP became a mediator network ISDN ISDN IP IP IP
    31. 31. 1 ISDN ISDN How IP became a mediator network ISDN ISDN LTE / IMS IP IP IP
    32. 32. 1How IP became a common mediator network • Simple Integration with IP networks, decrease communication cost. • Phone became a content device and not just phone-call device. • One integration IP Service Digital Digital IP IP
    33. 33. 1 • Simple / HTTP style. • Ability to capsulate foreign protocols. • The dominate architecture for internet integration are using* SIP. * IMS: SIP based FMC: Major functions Soft Switch : Common implementations. Why SIP and not other IP Protocols
    34. 34. 1Chapter headings: Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    35. 35. 1One word on IMS IMS - IP Multimedia Subsystem
    36. 36. 1One word on IMS IMS Services scheduler CSCFHSS ServiceServiceServiceService
    37. 37. 1One word on IMS IMS Re-router CSCFHSS OUT ServiceServiceServiceService
    38. 38. 1One word on IMS IMS Adapt networks according their abilities. CSCFHSS SIP NON SIP OUT ServiceServiceServiceService
    39. 39. 1Chapter headings Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    40. 40. 1SIP Protocol Communication session = Signaling + Media Signaling: initiating, Capability exchange, Media: The content itself – voice, video, message, files, control events, … Signaling: modifying, terminating a session.
    41. 41. 1SIP Protocol The SIP Define IP Signaling Session. The session may initiated by: • IP endpoint (SIP Phone, Click-To-Call, etc.) • GW/Soft-Switch/FMC (Legacy to IP). • Invoked as a mid-service. IP Service Digital Digital IP IP
    42. 42. 1SIP Protocol SIP message is HTTP like: text base. request response. head line, headers, body. Example of Network elements • User Agent – UAC, UAS • Proxy server • Registrar • Redirect server Example of SIP Request: • Invite • Bye • Cancel • Register
    43. 43. 1SIP Protocol SIP Response: • 1xx—Provisional Responses • 2xx—Successful Responses • 3xx—Redirection Responses • 4xx—Client Failure Responses • 5xx—Server Failure Responses • 6xx—Global Failure Responses Example for responses for Invite request: 180 Ringing 200 OK 302 Moved Temporarily 404 Not Found 407 Proxy Authentication Required 503 Service Unavailable
    44. 44. 1SIP Protocol The Body may contains any type. SDP: Capability declaration - voice, video, data, application, control, (text, message). XML / TXT. MULTI: Usually in order to cover foreign protocols. INVITE sip:972747004557@1.2.3.4 SIP/2.0 Call-ID: dd7705b18faf7bc6ae1da6bb3903a5ec@1.2.3.4 CSeq: 1 INVITE From: <sip:972543080675@1.2.3.4>;tag=4882894371614 To: <sip:972747004557@1.2.3.4> Content-Type: application/sdp Contact: <sip:600_0@1.2.3.4;transport=udp> Via: SIP/2.0/UDP 1.2.3.4:5060;branch=z9hG4bK49ddba9a2ba8c7ec Content-Length: 126 v=0 o=app-name 0 0 IN IP4 192.1.2.3 s=SIP-Call c=IN IP4 192.1.2.3 m=audio 27174 RTP/AVP 0 18 a=rtpmap:0 PCMU/8000 a=rtpmap:18 g729a/8000 a=fmtp:18 annexb=yes
    45. 45. 1Native basic flow to basic flow Register BOB ALICE BOB 200 ok Invite BOB 200 ok ACK BYE 200 ok Registrar
    46. 46. 1SIP INVITE INVITE sip:bob@lp.com SIP/2.0 Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds To: Bob <sip:bob@lp.com> From: Alice <sip:alice@lp.com>;tag=1928301774 Call-ID: a84b4c76e66710@pc33.atlanta.com CSeq: 1 INVITE Contact: <sip:alice@pc33.atlanta.com> Content-Type: application/sdp Content-Length: 142 v=0 o=Alice 2890844526 2890844526 IN IP4 host.atlanta.example.com c=IN IP4 alice.example.com m=message 7394 TLS/MSRP * a=accept-types:text/plain a=path:msrp://alice.example.com:7394/2s93i9ek2a;tcp
    47. 47. 1SIP INVITE – VIA &Contact headers INVITE sip:bob@lp.com SIP/2.0 Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds To: Bob <sip:bob@lp.com> From: Alice <sip:alice@lp.com>;tag=1928301774 Call-ID: a84b4c76e66710@pc33.atlanta.com CSeq: 1 INVITE Contact: <sip:alice@pc33.atlanta.com> Content-Type: application/sdp Content-Length: 142 v=0 o=Alice 2890844526 2890844526 IN IP4 host.atlanta.example.com c=IN IP4 alice.example.com m=message 7394 TLS/MSRP * a=accept-types:text/plain a=path:msrp://alice.example.com:7394/2s93i9ek2a;tcp
    48. 48. 1SIP INVITE - BODY INVITE sip:bob@lp.com SIP/2.0 Via: SIP/2.0/UDP alice.lp.com;branch=z9hG4bK776asdhds To: Bob <sip:bob@lp.com> From: Alice <sip:alice@lp.com>;tag=1928301774 Call-ID: a84b4c76e66710@pc33.atlanta.com CSeq: 1 INVITE Contact: <sip:alice@pc33.atlanta.com> Content-Type: application/sdp Content-Length: 142 v=0 o=Alice 2890844526 2890844526 IN IP4 host.atlanta.example.com c=IN IP4 alice.example.com m=message 7394 TLS/MSRP * a=accept-types:text/plain a=path:msrp://alice.example.com:7394/2s93i9ek2a;tcp
    49. 49. 1Alice Registers to LP1, BOB to LP2 Register 200 ok 200 ok RegisterLP1.COM LP2.COM ALICE BOB
    50. 50. 1Alice calls BOB and gets Music on Hold ALICE BOB LP2.COM IVR LP1.COM redirect server Invite BOB + SDP Alice 200 ok + SDP IVR
    51. 51. 1redirect the call to LP2 LP2.COM IVR LP1.COM redirect server ALICE BOB
    52. 52. 1LP1 routes the call to BOB via LP2 ALICE BOB IVR Invite BOB + Alice SDP 200 ok with BOB SDP Invite BOB + LP2 SDP 200 ok LP2 SDP LP2.COMLP1.COM redirect server
    53. 53. 1Connect the media between Alice and BOB through LP2 IVR (re) Invite + LP2 SDP 200 ok redirect server ALICE BOB LP2.COMLP1.COM
    54. 54. 1Disconnect IVR IVR redirect server ALICE BOB LP2.COMLP1.COM
    55. 55. 1 LP2.COM IVR LP1.COM redirect server ALICE BOB Connect the media between Alice and BOB through LP2
    56. 56. 1Chapter headings Part 1 1. Telecom in a Nutshell 2. How IP became a common mediator network 3. One word on IMS Part 2 4. SIP Base flow Part 3 5. SIP Content services. Part 4 6. IMS
    57. 57. 1SIP Content Services SIP is used by: • SIP Devices. • Converters to SIP-Based network: GW Soft Switch SIP-T, SIP-I : protocols that allow ISUP messages to be transported over SIP networks. FMC (Fixed mobile convergence): collection of services and abilities. Used by SIP for redirection, forking, seamless switches etc. IMS (IP Multimedia Subsystem): architectural framework for delivering IP multimedia services. It define an integration of other networks with Internet services. • IP Content Services IP Service DigitalIP IP Digital
    58. 58. 1SIP Content Services SIP is used by: • SIP Devices. • Converters to SIP-Based network: GW Soft Switch SIP-T, SIP-I : protocols that allow ISUP messages to be transported over SIP networks. FMC (Fixed mobile convergence): collection of services and abilities. Used by SIP for redirection, forking, seamless switches etc. IMS (IP Multimedia Subsystem): architectural framework for delivering IP multimedia services. It define an integration of other networks with Internet services. • IP Content Services IP Service DigitalIP IP Digital
    59. 59. 1SIP Content Services • Unified communication. • Device hunting (sequential dialing). • Seamless network switch (VCC, MCM). • Media manipulation Text to speech, Recording, Lawful interception, conference with side streaming (distance learning). • Remote Camera control. • Smartphone application wakeup. • In-Browser application (WebRtc). • Presence server (Sync IM presence and Calendar) • Reflect PBX Phones (CTI to IMS). • Pull call/chat to mobile. • Location service (use Cell location for chat application) • Mobile event (lost my phone, unmute lost phone,..)
    60. 60. 1Example Alice and Bob Signaling Session
    61. 61. 1SIP abilities - Example Alice Bob
    62. 62. 1SIP abilities - Example Alice BobBob get update in its IM application about Alice location location IM applicationLocation application
    63. 63. 1 Alice SIP abilities - Example Bob IM application Bob get update in its IM application about Alice location So he sends her a message.
    64. 64. 1 Alice SIP abilities - Example BobBob get update in its IM application about Alice location So he sends her a message. Alice call Bob through a UC system UC Server
    65. 65. 1 Alice SIP abilities - Example BobBob get update in its IM application about Alice location So he sends her a message. Alice call Bob through a UC system Bob cellular is off, other devices keep ringing. UC Server
    66. 66. 1 Alice SIP abilities - Example BobBob get update in its IM application about Alice location So he sends her a message. Alice call Bob through a UC system Bob cellular is off, other devices keep ringing. Bob reject the call from one of his devices UC Server
    67. 67. 1 Alice SIP abilities - Example BobBob get update in its IM application about Alice location So he sends her a message. Alice call Bob through a UC system Bob cellular is off, other devices keep ringing. Bob reject the call from one of his devices System detect a ‗human reject‘ and cancel all devices. UC Server reject
    68. 68. 1SIP Content Services • Unified communication. • Device hunting (sequential dialing). • Seamless network switch (VCC, MCM). • Media manipulation Text to speech, Recording, Lawful interception conference with side streaming (distance learning). • Remote Camera control. • Smartphone application wakeup. • In-Browser application (WebRtc). • Presence server (Sync IM presence and Calendar) • Reflect PBX Phones (CTI to IMS). • Pull call/chat to mobile. • Location service (use Cell location for chat application) • Mobile event (lost my phone, unmute lost phone,..)
    69. 69. 1SIP Content Services IP Service DigitalIP IP Digital
    70. 70. Q & A
    71. 71. Thank you
    72. 72. 1 IMS - IP Multimedia Subsystem
    73. 73. Thank you

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