Polycom MGC Administrator, Руководство администратора

Страница: 578 / 584

Appendix E: IP Network Components
E-4
The DNS Domain name is defined manually in the DNS server. The same
domain name must be entered also in the IP Network Service defined in the
MGC Manager.
All the devices register with the DNS automatically or manually. The IP
Network Service enables you to define the IP card host name, which allows
automatic registration with the DNS server. You can also manually define the
IP cards in the DNS server itself. The IP card can then be pinged using the
host name.
For H.323 conferencing:
• The gatekeeper registers with the DNS using its host name enabling its
auto discovery.
•
The server used for detection of the external addresses for NAT
Traversal, registers with the DNS using its host name.
In SIP conferencing, the DNS server is used for:
•
Registering the SIP servers using their host name.
•
RFC2543 Session Initiation Protocol (SIP): Locating SIP servers
automatically.
• Participant definition in the MGC Manager using the participant name
only, while the DNS server automatically adds the local domain name to
form the user SIP address (in the format user name@domain name).
Host Name
Each network device is assigned an IP address and a host name. The host
name is usually used for registration with the DHCP for dynamic address
allocation. The device also registers with the DNS server using the host name
and the IP address it was allocated by the DHCP.
H.323 SIP
Required Required