Lectures:
Real Time Protocol RTP, RTCP, SRTP, speech coding and decoding, speech bandwith requirements for RTP.
Standard H.323, protocol model, basic elements - GK, TE, GW, MCU, Signaling H.225.0 RAS, Q.931 and H.245
Call models GRC and DRC, Fast Connect, H.245 tunelling, fax standard T.38
Open solution H.323, network design and configuration GnuGK.
GW for PSTN networking, comparison of interfaces and capabilities - FXS, FXO, EM, ISDN PRI and BRI.
SIP/SDP protocol, description of elements - User Agent, Registrar, Redirect and Proxy server, SIP methods a answers, RFC 3261, SDP protocol fro media description of SIP session.
SIP headers parsing, transactions and dialogs, next methods not included in SIP core, offer/answer model, scenarios of media negotiations, using DNS record for IP telephony, ENUM.
SIPp – SIP sessions generator, SIP/SDP grammar, practical SIP/SDP scenario with authentication.
Asterisk, SW PBX, applications, dial plan, extensions, practical using SIP and IAX.
SIP and IAX trunk, their application , security on SIP trunk, authorization of access on trunk, rules for modification of dialed umbers.
Asterisk – advances services, Presence and Instant Messaging, calendars, practial using presence with Jabber.
Kamailio, syntax, structure of configuration, modules, static routing, DB - interoperability, design and configuration, REGISTRAR modul, SIP NAT traversal, RTPPROXY, NATHELPER.
Quality of IP telephony - MOS, PESQ, E-model and R-factor, fragmentation, packet losses, delay and jitter, network requirements Intserv, Diffserv).
MGCP and Megaco/H.248, webRTC and new trends in IP telephony.
Exercises:
Orientation in lab.
Configuration of SW and HW IP phones.
Traffic's monitoring in network, packet sniffers.
Laboratories:
Theme no.1., Basic analyzing of H.323 connection.
Theme no.2., H.245 procedures.
Theme no.3, RAS and basic Call Q.931 analyzing
Cisco VoGW, configuration.
Project GnuGK, introduction to configuration.
Project SER, introduction to configuration.
Project Asterisk, introduction to configuration.
Theme no.4, Analyzing SIP methods and responses, call flow.
Theme no.5, Parsing SIP headers.
Theme no.6, Analyzing of voice quality.
Projects:
Semestral project, design of VoIP network with one of the open source solutions as GnuGK or Kamailio or Asterisk.
Real Time Protocol RTP, RTCP, SRTP, speech coding and decoding, speech bandwith requirements for RTP.
Standard H.323, protocol model, basic elements - GK, TE, GW, MCU, Signaling H.225.0 RAS, Q.931 and H.245
Call models GRC and DRC, Fast Connect, H.245 tunelling, fax standard T.38
Open solution H.323, network design and configuration GnuGK.
GW for PSTN networking, comparison of interfaces and capabilities - FXS, FXO, EM, ISDN PRI and BRI.
SIP/SDP protocol, description of elements - User Agent, Registrar, Redirect and Proxy server, SIP methods a answers, RFC 3261, SDP protocol fro media description of SIP session.
SIP headers parsing, transactions and dialogs, next methods not included in SIP core, offer/answer model, scenarios of media negotiations, using DNS record for IP telephony, ENUM.
SIPp – SIP sessions generator, SIP/SDP grammar, practical SIP/SDP scenario with authentication.
Asterisk, SW PBX, applications, dial plan, extensions, practical using SIP and IAX.
SIP and IAX trunk, their application , security on SIP trunk, authorization of access on trunk, rules for modification of dialed umbers.
Asterisk – advances services, Presence and Instant Messaging, calendars, practial using presence with Jabber.
Kamailio, syntax, structure of configuration, modules, static routing, DB - interoperability, design and configuration, REGISTRAR modul, SIP NAT traversal, RTPPROXY, NATHELPER.
Quality of IP telephony - MOS, PESQ, E-model and R-factor, fragmentation, packet losses, delay and jitter, network requirements Intserv, Diffserv).
MGCP and Megaco/H.248, webRTC and new trends in IP telephony.
Exercises:
Orientation in lab.
Configuration of SW and HW IP phones.
Traffic's monitoring in network, packet sniffers.
Laboratories:
Theme no.1., Basic analyzing of H.323 connection.
Theme no.2., H.245 procedures.
Theme no.3, RAS and basic Call Q.931 analyzing
Cisco VoGW, configuration.
Project GnuGK, introduction to configuration.
Project SER, introduction to configuration.
Project Asterisk, introduction to configuration.
Theme no.4, Analyzing SIP methods and responses, call flow.
Theme no.5, Parsing SIP headers.
Theme no.6, Analyzing of voice quality.
Projects:
Semestral project, design of VoIP network with one of the open source solutions as GnuGK or Kamailio or Asterisk.