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| Abbreviations and Technical Terms |
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| Password | Meaning |
| HiPath Password | Protects the settings for communication |
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| with other HiPath devices. |
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| SNMP Password | Protects against unauthorized access to the |
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| Æ SNMP server for fault evaluation. |
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| Subscriber Password | Protects against unauthorized access to the |
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| subscriber number of the optiPoint phone. |
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PBX
Abbreviation of "Private Branch eXchange."
Private telephone system that connects various internal devices with the ISDN network.
PING
Abbreviation of "Packet Internet Groper."
Program for testing if a connection can be set up to a defined Æ IP desti- nation. In the course of a test, data is sent to the destination and then re- turned to the source. A message documenting the success/failure of the test is output along with additional information, where applicable, such as transmission time.
Port
Ports are used in Æ IP networks to permit multiple simultaneous commu- nication connections. Services are often assigned various different port numbers for this purpose.
Proxy
A proxy server is a cache which stores information locally.
PSTN
Public Switched Telephone Network (analog telephone network or analog ports at digital network nodes including the international public telephone network).
QoS
Abbreviation of "Quality of Service."
Describes the subjective, perceptible quality (service) of a voice connec- tion over Æ IP networks. QoS properties include the packet loss rate, pack- et delay, delay difference, reserved bandwidth, type of bit rate (variable, constant or unspecified) and bit rate.
RAM
Abbreviation of "Random Access Memory."
Memory with read/write access.
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