Orban opticodec 7200, Handbook

Page: 86 / 90

86 E OPTICODEC
Brief Lexicon
Ethernet Error Messages
Error message Possible causes
• NETWORK IS DOWN Device not connected to the network.
• NETWORK IS UNREACHABLE Local IP address has duplicate allocation.
• HOST IS UNREACHABLE The desired IP address cannot be reached.
• NETWORK RESET Error on the network.
• CONNECTION RESET BY PEER
The remote device has terminated the
connection.
• CONNECTION TIMED OUT The remote device is not reachable.
• CONNECTION REFUSED The connection was refused.
• HOST IS DOWN
The desired IP address cannot be reached
at the current time.
Standardised Audio Compression Procedures (Algorithms)
• G.711 Standardised audio compression procedure for speech
transmissions over ISDN. This algorithm requires 64
kbps bandwidth and supplies audio quality of up to
3.1 kHz ("telephone“).
• G.722 This algorithm requires a data rate of 64 kbps and
supplies audio quality of up to 7 kHz („radio quality“).
With G.722, two synchronisation modes are available:
SRT and H.221.
• 4SB ADPCM requires a data rate of 128 to 256 kbps (128 kbps per
audio channel) and supplies audio bandwidth of up
to 15 kHz. Low delay over ISDN: < 6 ms.
• MPEG Layer 2 Data rate 32 - 384 kbps, sampling rate up to 48 kHz*
and supplies up to 20 kHz audio bandwidth.
• MPEG Layer 3 Data rate 8 - 320 kbps, sampling rate up to 48 kHz*
and supplies up to 20 kHz audio bandwidth.
*Delay and audio bandwidth are strongly dependent on the sampling rate and data rate.