Course Description

Class runs 8:30am to 4:30pm (flexible). Includes PowerPoint driven lecture and hands-on labs. Course includes a full-page color manual and all lab equipment.

This course was designed for those individuals starting careers in VoIP, cellular technologies, and communications. It covers a wide breadth of topics, whereas labs focus primarily on the creation and deployment of a practical SIP communication platform scalable to the requirements of a small or medium business. Additionally, students will learn to troubleshoot their VoIP network with the packet capture tool Wireshark.

Course Length: 4 days
Location: On-site, Online, In-Town (Harrisburg / Philadelphia)

Classroom topics include:

  • Telecom Fundamentals / History
  • Analog Telephony Circuits
  • The rise of the ‘intelligent’ network (PSTN)
  • Switching
  • Routing / SS7
  • Telephone Numbering
  • Signaling
  • The rise of the ‘stupid’ network (IP Networking)
  • IP addressing (IPv4 / IPv6)
  • Packet Routing
  • DNS
  • DHCP
  • Why the future of the PSTN looks dark indeed
  • VoIP Fundamentals
  • Media Gateway Controllers, Media Gateways
  • Media Gateway Control Protocol (MGCP)
  • H.323
  • Session Initiation Protocol… it’s all about SIP
  • SIP basic requests (REGISTER, INVITE, PRACK, ACK, BYE, REFER)
  • SIP response codes (100, 200, 300, 400, 500, 600)
  • SIP Proxies
  • Real Time Transport Protocol (RTP)
  • 3 headed beast — Latency, Packet Loss, Jitter
  • CODECs
  • Session Description Protocol (SDP)
  • Calculate bandwidth requirements
  • IP Multimedia Subsystem (IMS)
  • Proxy-CSCF
  • Serving-CSCF
  • Interrogating-CSCF
  • Evolved Packet Core (EPC)
  • Radio Access Network (RAN) technologies
  • Communication platforms for business
  • Silence Suppression
  • NAT problems, and the STUN solution

Lab objectives include:

By the end of class, all students will have deployed a SIP PBX, registered their proxy to an ITSP, purchased a DID, and be able to call numbers on the PSTN (i.e. cellphones and houses) from VoIP phones and soft clients they configure.

  • Capturing IP traffic with Wireshark
  • Capturing IP traffic remotely with Tshark over an SSH tunnel (Probing network traffic remotely)
  • Deploying an Asterisk SIP PBX on a Virtual Machine
  • Asterisk on a Raspberry Pi
  • Capturing SIP traffic (REGISTER, INVITE, PRACK, ACK, BYE)
  • Capturing RTP traffic & playback
  • Exploring CODECs (g.711, G.729, AMR, AMR-WB, Speex, iLBC, G.723)
  • Making calls with SIP Softphones
  • SIP REGISTERING a DID with an ITSP

Interested in one of our courses? Contact us or call +1.717.585.6333 to schedule a free first-time consultation.