Filter and connection card ASLT and ATLB
From Zenitel Wiki
The 1009501041 is a combined filter and connection card for use with ASLT and ATLB cards inside AlphaCom E20 and AlphaCom E26 exchanges. The top six RJ45 connectors on the card match directly with STENTOFON station cables EPKAB98510 and EPKAB98515. RCO’s are available on the 7th RJ45 connector.
By using this filter/connection card it is possible to terminate CAT5 installation cables directly inside the exchange without using additional patchframes.
Dipswitches
The card features a dipswitch package. When the dipswitches are in the downward position, the filter/connection card matches with an ASLT card, in the upward position it matches with an ATLB card. This information is also available in silkscreen print on the card itself. Note that the ATLB12 card which is also mentioned in the silkscreen print is not available.
Pinout
| RJ45<br\>pin no. | Port 1 - 6 ASLT |
Port 1 - 6 ATLB |
Port 7 RCO |
|---|---|---|---|
| 1 | RCO 1 | ||
| 2 | RCO 2 | ||
| 3 | a-wire | RCO 3 | |
| 4 | a-wire | RCO 4 | |
| 5 | b-wire | RCO 5 | |
| 6 | b-wire | RCO 6 | |
| 7 | c-wire | GND | |
| 8 | d-wire | GND |
Other/earlier Versions
1009501011 - Filter card with 1.5m flat connection cable for connection to ASLT Subscriber Connection Board. 1009501014 - Filter card with 3m flat connection cable for connection to ASLT Subscriber Connection Board. 1009501021 - Filter card with 5m round connection cable with one end unterminated. 1009501023 - Filter card with 10m round connection cable with one end unterminated. 1009501031 - Filter card with 1.5m flat connection cable for connection to ATLB Subscriber Connection Board. 1009501034 - Filter card with 1.5m flat connection cable for connection to ATLB Subscriber Connection Board.
For these versione the color coding has varied through the years.
Flat Connection Cable:
| Signal | Pair | Color | Pin |
|---|---|---|---|
| a1 | 1 | White | 1 |
| b1 | White/Black | 19 |
Round Connection Cable:
Flat Connection Cable used before 3rd quarter 1998: