Side_1_360

the authorisation may have a Resource Manager component to keep track of the state of the ses- sion and be able to affect change ...

present, contains parameters that depend on the encryption algorithm used. The DES – CBC1) algorithm is mentioned as one possibi ...

commonly returned from the remote machine to the local machine, see Figure 19. The Telnet rec- ommended setting is ToS = 1000, i ...

A virtual router approach in combination with MPLS is described in [RFC2917]. Compared to BGP-VPNs (called overlay models in the ...

used for a number of VPNs. As described above, a PE router maintains a forwarding table per VPN it takes part in. If a packet ar ...

page. The links at the pages are said to use hypertext. The client is located at the user. The browser fetches the page requeste ...

a page is fetched, the local cache can be exam- ined to see if the page is there and if the page is still up to date. This allow ...

developed. Whenever an RTP flow is used, cor- responding out-of-band RTCP flows are estab- lished, enabling the sender and recei ...

resources should be reserved or how security should be implemented. This is left for other protocols. In this respect, SIP is mo ...

Two examples of attribute lines are the frame rate and a quality indicator: a=framerate:<frame rate>, giving the number of ...

haps even more in the terminal equipment. For the latter, there are factors affecting the user per- ceived quality, such as (see ...

presentation exhaustive. Simply counting the number of publications being presented every day within the “Internet area” would p ...

311 Introduction One aspect of real-time transmission stands out as especially important, the use of IP as the foundation for te ...

In the case of virtual circuit a specific route is established for the entire transmission, which all packets belonging to the s ...

The following issues have an impact on the QoS obtained by the receiver; delay/latency, jitter, digital sampling, voice compress ...

too slow to cope with the time sensitiveness of real time voice transmissions. This forces VoIP to incorporate other quicker sol ...

the other option available is mainly integrating the existing voice with IP systems at different points along the chain. The PBX ...

of the telephony system are used. Hence, no echo cancellation is performed by the telephony system even though long distance cal ...

ogy [8]. The H.248 is a joint venture between IETF and ITU’s H.323. The main features are a greater scalability and to address t ...

on a packet switched network, as described ear- lier. This means that there are no guarantees that the packets will arrive accor ...