Clear-Com HX System Frames - Manual (Page 49)

In Figure 15: Ship-to-Shore E & M signaling, E & M signaling is carried with audio
channels on the direct T1 connection and then split into logic functions in the matrix frame:
1. The direct E1 / T1 connection ( ) carries audio and E & M signaling
(the incoming E & M signal ( )) from the on-shore communications
system.
2. The E & M signal is received by the E-QUE card in the system frame (matrix), and
treated as a GPI by the matrix.
3. The GPI generates the audio routes (where applicable) and indication outputs
required by the FOR-22 interface module to generate relay closure for radio PTT
(Push-to-Transmit).
4. The FOR-22 transmits incoming audio from the ship radio to the system frame
(matrix).
5. The incoming audio is VOX detected in the matrix’s MVX-A16 analog card.
The MVX-A16 card is configured in EHX to generate the required audio routes
(where applicable) and drive E signaling, as represented by a GPO on the
appropriate T1 channel of the E-QUE card.
6. The direct E1 / T1 connection carries audio and E & M signaling
(the outgoing E & M signal ( )) to the on-shore communications system.
Tip: For more information about direct E-QUE E1 / T1 connections, see 7.4 E1 / T1 linking.
6.8.2 Enabling E & M signaling on the E-QUE card
To enable E & M signaling on an E1 / T1 direct E-QUE card:
1. In EHX, select the appropriate matrix frame. Go to Hardware > Cards and Ports.
2. From the Card Slot drop-down menu, select an available card slot.
From the Card Type drop-down menu, select either of the following card types (in
accordance with your requirements):
E-QUE (T1 Direct)
E-QUE (E1 Direct)
3. The ports are displayed for the selected card type. Configure as many ports as you
require as T1 / E1 Direct.
Note:
A T1 direct E-QUE card has 48 ports. An E1 direct E-QUE card has 60 ports.
49 Eclipse HX Matrix Frame Installation Guide