Specifications

Terms and Abbreviations Nur für den internen Gebrauch
A31003-H3580-M103-2-76A9, 01-2009
A-2 HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
hg-a.fm
CAPI
Common ISDN Application Interface. Important CAPI interface properties include support
for multiple B channels for data and voice, use of the B channel protocol for connection con-
trol, selection of different services, support for multiple logical connections over a physical
connection, support for multiple connections, use of multiple communication protocols and
support for one or more basic accesses or primary rate accesses.
CHAP
Challenge Handshake Authentication Protocol. In the case of CHAP, authentication is con-
trolled by the host. When a client dials in, he or she is prompted by the host to authenticate
himself or herself. The username/password combination used for authentication is trans-
mitted by the client in encrypted form via MD5.
CLI
Command Line Interface. Generic term for command lines and shells, terminal emulations,
etc.
CLIR
Calling Line Identification Restriction. ISDN feature.
Codec
Codecs convert analog audio or video data into digital format (encoding) and back into an-
alog format (decoding).
CorNet-NQ
CorNet NQ (from "Corporate Networking") is a Siemens proprietary signaling protocol.
CorNet-NQ is a superset of CorNet N which supports QSIG.
D
D channel
A D channel is an ISDN signaling channel which transmits call control information.
DES
Data Encryption Standard. Conventional encryption and decryption procedure with sym-
metrical algorithm; in other words, the same key is used for encryption and decryption. The
block size is 64 bits, that is, a 64-bit block of plaintext is transformed into a 64-bit block of
ciphertext. The key that controls this transformation is also 64-bit. However, only 56 of
these 64 bits are available for the user; the remaining 8 bits (one bit from each byte) are
required for the parity check.
DID
Abbreviation of "Direct Inward Dialing". DID is a method of forwarding incoming calls direct-
ly to H.323 terminals.