Lisa Bock covers DNS, an integral component of VoIP, which has Type A, AAAA, and service records that allows an IP phone to locate and connect with another host on the network.
- [Instructor] Every device that's connected to…the internet, such as a web or email server,…a VoIP phone, or other end device,…has an IP address.…Domain name system, or DNS,…maps a host name to an IP address…and works like the internet's phone book.…This enables devices to connect with one another.…Whenever you place a call to a SIP address,…the server will request the address from the DNS server.…
Once it's resolved, you can make the call.…With DNS, there are a number of…different types of resource records.…These resource records are used to specify a resource type…and an IP address to locate the resource.…Some commonly seen records are a type A record.…A type A resource record is used for…an IP version four address.…You might also see a quad A,…which is used for an IP version six address.…
A mail exchange record will redirect mail to a mail server.…And the last entry is a service record,…which defines available services…such as HTTP, LDAP, and SIP.…Similar to the way a mail exchange record…is used to send and receive mail,…
- Voice over IP (VoIP) and Unified Communications
- Digitizing a signal
- VoIP components
- Protocols used by VoIP, including TCP/IP and DHCP
- Connecting systems
- Gateways and gatekeepers
- Factors that might affect quality on a VoIP network
- Wireshark statistics
Skill Level Advanced
Wireshark: Advanced Tools and Techniqueswith Lisa Bock1h 49m Intermediate
Learning VoIP and Unified Communicationswith Lisa Bock1h 8m Intermediate
What you need to know4m 11s
1. VoIP Overview
3. Connecting Systems
4. Network Operations
5. Wireshark Statistics
Next steps1m 25s
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