VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011)...

40
SHARKFEST ‘11 | Stanford University | June 13–16, 2011 VoIP TroubleshooGng and Analysis June 16 th 2011 Loris Degioanni Sr. Director of Technology | Riverbed Technology Pietro Giordano Technical Staff Team Lead | Riverbed Technology SHARKFEST ‘11 Stanford University June 1316, 2011 Wireshark Developer and User Conference

Transcript of VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011)...

Page 1: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  TroubleshooGng  and  Analysis  June  16th  2011      Loris  Degioanni  Sr.  Director  of  Technology  |  Riverbed  Technology  Pietro  Giordano  Technical  Staff  Team  Lead  |  Riverbed  Technology      SHARKFEST  ‘11  Stanford  University  June  13-­‐16,  2011  

Wireshark Developer and User Conference

Page 2: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Signaling  and  Data  

•  Signaling  protocols  – Manage  the  call  

•  NoNfy  a  receiver  for  incoming  calls  

•  NoNfy  the  caller  for  accepted  or  rejected  calls  •  NoNfy  both  the  caller  and  the  receiver  for  errors/events  

– Manage  the  data  protocols  •  Decides  how  the  voice  is  encoded  •  Decides  how  the  voice  is  transferred  

•  Data  protocols  – Carry  the  coded  voice    

Page 3: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Signaling  and  Data  

•  Signaling  protocols  – SIP  (IETF)  – H323  (ITU-­‐T)  – SCCP  or  Skinny  (CISCO)  – MCGP  (IETF)  – Others  

•  Data  protocols  – RTP  (PCMU,  PCMA,  G728,  G729…)  

Page 4: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Signaling  and  Data  

– Cascade  Pilot  views  (sip_ex_01_sig_data.pcap)  •  VoIP  Signaling  vs.  Data  Bandwidth  Over  Time  

•  VoIP  Signaling  vs.  Data  Bandwidth  UNlizaNon  •  RTP  Traffic  by  CODEC  

•  Top  RTP  CODECs        

Page 5: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5930/IP2

VoIP  call:  a  simple  example  

5923/IP1

IP3

Page 6: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

VoIP  call:  a  simple  example  

5923/IP1 Listening on PortA

IP3

Page 7: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

VoIP  call:  a  simple  example  

IP3

5923/IP1 Listening on PortA

Page 8: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  call:  a  simple  example  

IP3

5923/IP1 Listening on PortA

5950/IP2 Listening on PortB

Page 9: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  call:  a  simple  example  

IP3

5923/IP1 Listening on PortA

5950/IP2 Listening on PortB

Page 10: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  call:  a  simple  example  

Connecting to IP2:PortB Connecting to IP1:PortA

IP3

5923/IP1 Listening on PortA

5950/IP2 Listening on PortB

Page 11: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  call:  a  simple  example  

5923/IP1 5930/IP2

– Cascade  Pilot  views  (sip_ex_01_reg.pcap)  •  TransacNon  Analysis  by  VoIP  Call  

Page 12: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay    

IP3

5923/IP1 5950/IP2

Page 13: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

IP3

5923/IP1 Listening on PortA

5950/IP2

Page 14: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

IP3

5923/IP1 Listening on PortA

5950/IP2

Listening on PortC

Page 15: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

IP3

5923/IP1 Listening on PortA

5950/IP2 Listening on PortB

Listening on PortC

Page 16: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

IP3

5923/IP1 Listening on PortA

Listening on PortC Listening on PortD

5950/IP2 Listening on PortB

Page 17: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

IP3

5923/IP1 Listening on PortA

Listening on PortC Listening on PortD

5950/IP2 Listening on PortB

Page 18: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  server  as  relay  

– Cascade  Pilot  views  (sip_ex_03_relay.pcap)  •  TransacNon  Analysis  by  VoIP  Call  

 

Page 19: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1

Page 20: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Page 21: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Page 22: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Listening on PortC

Page 23: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2 Listening on PortB

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Listening on PortC

Page 24: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2 Listening on PortB

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Listening on PortC Listening on PortD

Page 25: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2 Listening on PortB

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Listening on PortC Listening on PortD

Page 26: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

5950/IP2 Listening on PortB

Calling  from  behind  a  NAT  

IP3

NAT  

5923/IP1 Listening on PortA

Listening on PortC Listening on PortD

Page 27: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Calling  from  behind  a  NAT  

– Cascade  Pilot  views  •  TransacNon  Analysis  by  VoIP  Call  

–  sip_ex_04_cace-­‐voip-­‐nat-­‐behind-­‐nat.pcap  –  sip_ex_04_cace-­‐voip-­‐nat-­‐carl.pcap  –  sip_ex_04_cace-­‐voip-­‐nat-­‐nina.pcap  

Page 28: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Problems  

•  Signaling  related  problems  – Control  Messages/Errors  – PDD  

•  Data  related  problems  – Delay  –  Jieer  – Packet  Loss    

Page 29: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Control  Messages/Errors  

•  Recognizing  for  the  different  VoIP  protocols:  – Regular  transacNon  messages  – MisconfiguraNon  errors  

•  SIP  Response  codes:  – 1xx  Provisional  – 200  OK  – 3xx  RedirecNon  – 4xx  Request  Failure  – 5xx  Server  Failure  – 6xx  Global  Failures  

Page 30: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

VoIP  Control  Messages/Errors  

– Cascade  Pilot  views  (sip_ex_01_sig_data.pcap)  •  SIP  Massages  DistribuNon  

Page 31: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Post  Dial  Delay  

– The  Post  Dialing  Delay  (PDD)  is  the  Nme  interval  between  the  dialing  of  the  last  digit  and  the  recepNon  of  either  a  ring  tone  or  a  busy  signal  

– The  smaller  PDD  the  beeer  

– PDD  <=  1s  

Page 32: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Post  Dial  Delay  

– Cascade  Pilot  views  (sip_ex_01_sig_data.pcap)  •  VoIP  Avg/Max/Min  PDD  Over  Time  

•  VoIP  Avg  PDD  –  Worst  Sources/Callers  •  VoIP  Avg  PDD  –  Worst  DesNnaNons/Receivers  

Page 33: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Voice  Quality  

– Packet  Loss  – Latency  –  Jieer  – R-­‐Factor  – MOS  

Page 34: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Packet  Loss  

– Data  packet  containing  voice  can  be  dropped  •  because  of  a  congesNon  on  Network  •  because  of  a  limited  buffer  size  on  the  receiver        

– The  Packet  Loss  in  a  voice  stream  affects  the  call  quality  

– Packet  Loss  <=  1  %  

Page 35: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Packet  Loss  

– Cascade  Pilot  views  (sip_ex_03._marcello.pcap)  •  VoIP  Call  Summary  –  Packet  Loss  

•  VoIP  Avg/Max/Min  Packet  Loss  Over  Time  –  Send  To  Wireshark  (RTP  outside  conversaNons)  

•  VoIP  Packet  Loss  –  Worst  Sources/Callers  

•  VoIP  Packet  Loss  –  Worst  DesNnaNons/Receivers  •  TransacNon  Analysis  by  VoIP  Call  

Page 36: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Latency  

– The  Latency  is  the  amount  of  Nme  that  takes  for  a  data  packet  to  get  from  a  source  to  a  desNnaNon    

– For  VoIP  the  Latency  is  the  measure  of  the  one-­‐way  delay  between  two  nodes  

– Latency  <=  150  ms  

Page 37: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Jieer  

– The  Jieer  is  the  variaNon  of  the  data  packet  arriving  Nme,  the  variaNon  of  the  data  packet  delay  

–  If  correctly  compensated  with  jieer  buffer  it  does  not  affect  too  much  a  communicaNon  

–  Jieer  <=  20-­‐30  ms  

Page 38: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

Jieer  

– Cascade  Pilot  views  (sip_ex_03._marcello.pcap)  •  VoIP  Call  Summary  –  Jieer  

•  VoIP  Jieer  DistribuNon  

Page 39: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

R-­‐Factor  

– The  R-­‐Factor  is  a  numeric  method  for  compuNng  and  index  of  the  quality  of  a  voice  stream  (E-­‐Model,  ITU-­‐T  RecommendaNon  G.107)  

– The  R-­‐Factor  takes  into  account  •  The  cumulaNve  effect  of  the  used  CODEC  impairments  •  The  Packet  Loss  and  how  it  affects  the  used  CODEC  •  Delay  between  two  consecuNve  voice  data  packets  

– The  R-­‐Factor  ranges  between  50  and  90  – R-­‐Factor  >=  80  

Page 40: VoIP)TroubleshooGng)and)Analysis) · SHARKFEST)ʻ11))|))Stanford)University))|))June)13–16,)2011) VoIP%Signaling%and%Data • Signaling%protocols% – Manage%the%call% • NoNfy%areceiver%for%incoming

SHARKFEST  ‘11    |    Stanford  University    |    June  13–16,  2011  

MOS  

– MOS  (Mean  Opinion  Score)  is  a  numeric  value  that  provides  an  indicaNon  of  the  voice  stream  quality  

– The  MOS  ranges  between  1  (Impossible  to  communicate)  to  5  (Perfect  communicaNon)  

– MOS  >=  4  


VoIP in Flow A Beginning - Carnegie Mellon University€¦ · 5 General Principals Finding VoIP • None standard VoIP have unique signaling protocols and ports • Skype • Authentication

VoIP in Flow A Beginning - Carnegie Mellon University€¦ · 5 General Principals Finding VoIP • None standard VoIP have unique signaling protocols and ports • Skype • Authentication

Stillink 200 / 800 Combined VoIP Gateway and Signaling ...tempwebmiumusersrecovery.blob.core.windows.net/... · Stillink 200 / 800 Combined VoIP Gateway and Signaling Converter Systems

Stillink 200 / 800 Combined VoIP Gateway and Signaling ...tempwebmiumusersrecovery.blob.core.windows.net/... · Stillink 200 / 800 Combined VoIP Gateway and Signaling Converter Systems

Monitoring Call Signaling for VoIP Service Assurance

Monitoring Call Signaling for VoIP Service Assurance

VoIP - KAISTumls.kaist.ac.kr/professor/ftp/2nd_workshop/07-VOIP_kimhd.pdf · Voice over IP (VoIP) ... " Transport PSTN signaling (SS7, Q.931) over IP. Gateway Control Protocol Map

VoIP - KAISTumls.kaist.ac.kr/professor/ftp/2nd_workshop/07-VOIP_kimhd.pdf · Voice over IP (VoIP) ... " Transport PSTN signaling (SS7, Q.931) over IP. Gateway Control Protocol Map

SCTP/SIGTRAN & SS7 Overview - Sharkfest - Wireshark

SCTP/SIGTRAN & SS7 Overview - Sharkfest - Wireshark

Vertex VoIP Caller ID · PDF fileVertex VoIP Caller ID (Version 1.5) Introduction The Vertex unit is designed to capture Caller ID and other telephony signaling on VoIP phone calls

Vertex VoIP Caller ID · PDF fileVertex VoIP Caller ID (Version 1.5) Introduction The Vertex unit is designed to capture Caller ID and other telephony signaling on VoIP phone calls

VOIP Overview and Signaling for MSU

VOIP Overview and Signaling for MSU

VoIP Configuration Guide - Extron...• VoIP functionality withinthe DMP Plus Series is built around the Session Initiation Protocol (SIP) signaling system, as defined in RFC 3261.

VoIP Configuration Guide - Extron...• VoIP functionality withinthe DMP Plus Series is built around the Session Initiation Protocol (SIP) signaling system, as defined in RFC 3261.

SHARKFEST '09 | Stanford University | June 15–18, 2009 Wifi Security Sharkfest '09 Mike Kershaw Kismetwireless.net SHARKFEST '09 Stanford University June.

SHARKFEST '09 | Stanford University | June 15–18, 2009 Wifi Security Sharkfest '09 Mike Kershaw Kismetwireless.net SHARKFEST '09 Stanford University June.

Smart Web Management for SS7 VoIP Gateway [호환 모드] · 2013. 12. 13. · SS7 VoIP Gateway Main FeaturesSS7 VoIP Gateway Main Features • Support SS7 to SIP/H.323 signaling

Smart Web Management for SS7 VoIP Gateway [호환 모드] · 2013. 12. 13. · SS7 VoIP Gateway Main FeaturesSS7 VoIP Gateway Main Features • Support SS7 to SIP/H.323 signaling

802.11 Secrets Revealed - Sharkfest - Wireshark

802.11 Secrets Revealed - Sharkfest - Wireshark

SHARKFEST ‘10 | Stanford University | June 14–17, 2010 Expose VoIP Problems With Wireshark June 15, 2010 Sean Walberg Vantage Media SHARKFEST ‘10 Stanford.

SHARKFEST ‘10 | Stanford University | June 14–17, 2010 Expose VoIP Problems With Wireshark June 15, 2010 Sean Walberg Vantage Media SHARKFEST ‘10 Stanford.

TOP SECREVCOMINThREL TO USA, AUS, CAN, GBR, APEX … › sites › default › files › assets › ...APEX VoIP Exploitation 4, HAMMERCHANT Proses) VoIP Signaling VolP Content FASHIONCLEFT

TOP SECREVCOMINThREL TO USA, AUS, CAN, GBR, APEX … › sites › default › files › assets › ...APEX VoIP Exploitation 4, HAMMERCHANT Proses) VoIP Signaling VolP Content FASHIONCLEFT

Independent Lab Test Report - Cisco · • Certificate-authenticated, encrypted VoIP call control and signaling • Media (VoIP RTP stream) encryption on 7970 IP phone • Local IP-phone

Independent Lab Test Report - Cisco · • Certificate-authenticated, encrypted VoIP call control and signaling • Media (VoIP RTP stream) encryption on 7970 IP phone • Local IP-phone

VoIP over 1xEv-DO Revision A CDG VoIP Summit · Recommend optimizations, acceptable tradeoffs C. Signaling assessment Messaging obstacles (# mess., ... (Land-to-Mobile) RL (Mobile-to-Land)

VoIP over 1xEv-DO Revision A CDG VoIP Summit · Recommend optimizations, acceptable tradeoffs C. Signaling assessment Messaging obstacles (# mess., ... (Land-to-Mobile) RL (Mobile-to-Land)

cours-mex-voip-2013c2.touta.in/wp-content/uploads/2013/06/cours-mex-voip-2013.pdf · Réseau établissement libération échanges 7 ... DiffServ, MPLS!Transporting signaling: UDP,

cours-mex-voip-2013c2.touta.in/wp-content/uploads/2013/06/cours-mex-voip-2013.pdf · Réseau établissement libération échanges 7 ... DiffServ, MPLS!Transporting signaling: UDP,

Capture Limitations of a Laptop - Sharkfest - Wireshark

Capture Limitations of a Laptop - Sharkfest - Wireshark

Solera Networks at Sharkfest 2008

Solera Networks at Sharkfest 2008

SharkFest ’18 Europe - sharkfesteurope.wireshark.org · #sf18eu • Johannes Weber • • @webernetz Johannes Weber SharkFest ’18 Europe #sf18eu • Imperial Riding School Renaissance

SharkFest ’18 Europe - sharkfesteurope.wireshark.org · #sf18eu • Johannes Weber • • @webernetz Johannes Weber SharkFest ’18 Europe #sf18eu • Imperial Riding School Renaissance

Pre-Conference Troubleshooting Class - Wireshark · Pre-Conference Troubleshooting Class SharkFest’17 Europe Agenda Instructor Bios Session Abstracts & Requirements SharkFest’17

Pre-Conference Troubleshooting Class - Wireshark · Pre-Conference Troubleshooting Class SharkFest’17 Europe Agenda Instructor Bios Session Abstracts & Requirements SharkFest’17