GSGC9

Very flexible and highly innovative main module of the Glensound 3U ISDN system.

• Contains Two Codecs & Terminal Adapter

• Connects directly to an ISDN2 S bus

• Make ordinary telephone calls

• Use as near perfect telephone balance unit

• Use for broadcast sound (G722)

• No extra circuits required for installation

• Use existing audio circuits for control

• Dial & Configure using DTMF

• Recorded messages provide information to the user

• 3U Module only 7E wide x 160mm deep

• Up to 10 modules can be fitted in a 3U subrack

Designed for broadcast use, this module is very compact and permits a large number of codecs to be installed in a small space. Each codec can be configured to use the G711, the G722 or either algorithm. Because the G711 algorithm is the standard used for ordinary telephones it is possible to make ordinary telephone calls. More remarkably, the GSGC9 can also be used as two telephone balance units with perfect separation between the go and return circuits.

The G722 mode provides 7.5kHz circuits and is commonly used by the broadcasters for news, sport and current affairs. Frame alignment of the G722 signal is achieved by statistical analyses of the incoming data, but the outgoing data is network aligned.

Because DTMF signals are used to control the GSGC9 and recorded messages are used to let the user know the call progress, it is entirely practical to install these modules in an apparatus room and control them from a studio with no control circuits required. All information goes to and from the studio on the ordinary ‘programme’ and ‘cue’ audio pairs.

Audio inputs and outputs can be plugged into bantam jacks on the front panel or wired into the multiway DIN plug on the module rear. All inputs and outputs are zero level balanced

Links to GSGC9 System Pages

3U System                  1U & 'Brick'                 Controllers

Links to Other ISDN Pages

GSGC5       GSGC6      GSGC8     GSGC9    GSGC17  GSGC24A  GSGC25  GS3U-057    TX RESERVE