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P2000W V2 Troubleshooting Guide
6. What is the difference between H.323 and SIP?
H.323 and SIP are proposed by different group
Session Initiation Protocol (SIP) is a standard introduced by the Internet Engineering Task
Force in 1999 to carry voice over IP. Since it was created by the IETF, it approaches voice
and multimedia from the Internet, or IP, perspective of view. Where as H.323 emerged
around 1996, and as an International Telecommunication Union standard it was designed
from a telecommunications perspective. Both standards have the same objective - to enable
voice and multimedia convergence with IP protocols.
7. Can H.323 and SIP interoperate with one another?
In interoperability between the two, the industry is making slow but sure progress.
Interoperability must first happen between vendor implementations of the same protocol
(SIP-to-SIP and H.323-to-H.323) and then between protocols. Currently in order for SIP
client to talk to H.323 client the ITSP must have a trunking gateway act as a translator
between the two protocols without the truncking gateway the two protocols are not able to
communicate to one another.
8. What do I need in order to use SIP?
The minimum required to use VoIP is as follow.
1. A high-speed Internet connection. This can be a cable modem, or a high-speed
network services such as ISDN, DSL or a T-1 link. The need of the bandwidth
required will depend on the amount of telephone traffic will be in your network.
2. A PC with VoIP software installed or a hardware VoIP box such as ATA or device
like P2000W V2.
3. An account with a VoIP provider such as an ITSP. The account can be configured to
recognize your calls automatically, or you can require the users to enter their unique
account numbers issued.
9. What is voice quality?
Voice quality is how well a person can hear the voice on the opposite end.
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