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Chapter 6 Interfaces
An SS7 Serial Interface Port Splitter Cable is available, DKL26 (see Chapter 12, “Part Number Reference”).
This is a cable that converts from the dual V.11 26-way high density D connector (detailed in Table 6) to two
15-way male DB15 connectors (detailed in Table 7). When installing this cable, ensure that the ferrite clamp
is fitted close to the 26-way connector.
6.6 Ethernet Interfaces
To ensure EMC product regulation compliance for intra-building lightning surges, the product shall only be
used with shielded LAN cables that are grounded at both ends.
Two pairs of Ethernet connectors are provided on the SS7G21 and SS7G22. ENET 1 and ENET 2 are provided
by the Server Board, and ENET LNK A and ENET LNK B are provided by a separate low-profile PCI NIC.
Figure 9 shows the Ethernet connectors provided by the PCI NIC and the Server Board.
The Ethernet interface connectors incorporate status LED indicators. The LEDs on the network interface
connectors indicate link/activity on the network and the speed of operation. The green LED, when on,
indicates network connection and when blinking indicates TX/RX activity. The speed LED indicates 1000
Mbps when amber, 100 Mbps when green, and 10 Mbps when off. Table 8 shows the Ethernet connector
pinouts.
A NIC Activity LED (green) on the front panel provides an indication of activity on the ENET 1 or ENET 2
ports. See Section 5.2, “Front Panel” on page 32 for more information.
Figure 9. Ethernet Interfaces Connectors
Table 7. SS7 Serial Interface Port Splitter Cable 15-Way Male DB15 Connector Pinouts
Pin No Direction Function
1 Chassis ground
2 Output V.11 Transmit true data
3 No connection
4 Input V.11 Receive true data
5 No connection
6 Input V.11 Receive true clock
7 Output V.11 Transmit true clock
8 Signal Ground
9 Output V.11 Transmit inverted data
10 No connection
11 Input V.11 Receive inverted data
12 No connection
13 Input V.11 Receive inverted clock
14 Output V.11 Transmit inverted clock
15 No connection
Pin 1
Link/Activity
Indicator
(Green)
Speed
Indicator
(Multi-colored)
ENET 2 (top) and ENET 1 (bottom)
Provied by the Server Board
Pin 1
ENET LNK B (left) and ENET LNK A (right)
Provided by the NIC
Link/Activity
Indicator
(Green)
Speed
Indicator
(Multi-colored)
Pin 1