Clear-Com HX System Frames - Manual (Page 113)

Figure 5-20 T1 Trunk Card Properties
5.31.5 Clock recovery
The data clock may be generated by the E-QUE card (Local Generated) or taken from the
T1 line. Normally the card should be set to Line Recovery for connection to a third party
device or a T1 network. For other devices the clock source must be determined before
configuration. Select the correct configuration by clicking on the appropriate radio button.
If connecting two Eclipse HX matrices back to back using T1:
• An E1 or T1 crossover cable is required.
• One E-QUE card should be set to Local Generated clock and the other to Line
Recovery clock.
5.31.6 Codec
E-QUE cards configured as T1 Direct/Trunk use two cables plugged into ports 1 (top) and
5 (bottom) for the E-QUE card to provide T1 trunk ports.
The top cable (Top Half) provides the first 16 ports (17-32) and the bottom cable (Bottom
Half) provides the second 15 ports (33 - 48). The top and bottom cables can be configured
to use different Codecs. The Codecs that are available comprise:
• G722 - standard G722 conversion and compression.
• G722 A-Law - uses an A-law algorithm to optimize the G722 codec. This is often
used in European systems.
• G722 µ-Law - uses a µ-law algorithm to optimize the G722 codec. This is often
used in North America and Japan.
Click the appropriate radio button to select the Codecs for top and bottom cables.
5.32 E-QUE antenna
This action automatically adds an E-QUE card with eight antenna ports configured. Each
antenna provides six user ports. The hardware table shows the first user port number for
each antenna rather than the E-Que port number. Therefore the first antenna is shown as
port 1 (the first beltpack port) and the second antenna is shown as port 7 (previous first
port number plus six), since beltpack ports 1-6 are on the first antenna. This is repeated for
successive antennae.
113 Eclipse EHX Software User Guide