- Terminating impedance options of 600ohms.
- Supports full range of CAS signaling states to ensure compatibility with most public networks.
- Encodes analog signals into 64 Kbps PCM format for connection to digital networks.
- Ability to specify, on a port-by-port basis, North American ANSI standard AB signaling or ITU
(CCITT) ABCD signaling.
- Robust diagnostic evaluation and fault isolation through extensive loopbacks and test tone selection.
- Compatible with all IMACS voice compression server cards.
- Provides ring tone through additional ringing generators
IMACS FXS Cards
IMACS FXS cards can be installed in any user slot in any of the IMACS chassis. These cards encode the incoming analog voice signals into 64 Kbps PCM format before transmission onto the network. The FXS cards can use the voice-compression features of the ADPCM card. Each FXS card provides a single 50-pin female Amphenol connector (RJ21).
All port parameters are software selectable on a port by port basis. The mode setting specifies whether the port is to be used for standard Foreign Exchange Station (“FXS”), Foreign Exchange Software Defined Network (“FXSDN”), Private Line Automatic Ringdown (“PLAR”), or Dial Pulse Origination (“DPO”) applications. The type setting specifies Loop Start (“LOOP”), Loop Forward (“LP-FD”), Ground Start (“GS”), Ground Start Immediate (“GS-I”) and Ground Start Automatic (“GS-A”) operation. The PCM coding options supported include “U-law”, “A-law” and “A-inv” (inverted A-law), and the user may also select the trunk conditioning mode (“busy” or “idle”) that should be applied towards the attached equipment should the WAN facility that the port is connected to fail.
The user may also specify, on a port-by-port basis, whether to use North American ANSI standard AB signaling or ITU (CCITT) ABCD signaling by turning the signaling conversion setting “on” or “off”. Software-initiated testing and diagnostics supported on the FXS card includes the setting of both analog (“anlg”) and digital (“dgtl”) loopbacks towards the network and the generation of a digital milliwatt signal on a port-by-port basis. A robust set of test functions allow the user to monitor and set the state of the analog tip and ring leads of any FXS port and to set and monitor the state of the ABCD signaling bits of the digitized voice signal.Download or print data sheet