DM16E1 / DM4E1 Operation and Installation Manual - 204-4001-19 17
V.35-V.36/V.11: DB25 connector with ISO2110 Amd.1 pinout for connection to the V.11 interface at
2048kbit/s, which can be configured to assume the position of any E1 tributary within channels E2 or E3.
More details in chapter 5.
ALARM – IN and OUT: in one DB9 female connector, enables the relay contacts of the alarm, and serves
as an input for external alarms coming from other equipment. To see a description of pinout, consult
chapter 12.
10/100Base-T-Bridge: RJ45 connector for Ethernet Remote Bridge. More details in chapter 8. By this
connector there is a led indicator which shows the establishment of a link. The connectors and the led are
always assembled independently from the bridge card, which is optional.
10BaseT-SNMP: RJ45 connector for the connection of Ethernet network to SNMP management, using the
DmView software. A led indicates the status of the link.
EXTERNAL CLOCK: this BNC (or IEC169/13) connector can be connected to an external clock source of
2048kHz (in accordance with G.703), for use with E1 interfaces.
MAIN and BACKUP: ports for DC or AC voltage, as described in chapter 2.2.
TRIBUTARY (1 to 16 in DM16E1): the equipment can be supplied with RJ45 connectors for an impedance
of 120 ohms, or with BNC or IEC169/13 connectors for 75 ohms. In this case, there are straps for the
connection of the coaxial cable external shield to the frame ground (grounding).
TRIBUTARY (1 to 4 in DM4E1): the equipment can be supplied with BNC or IEC169/13 connectors for 75
ohms. In addition, RJ45 connectors for an impedance of 120 ohms are always present. In the case of 75-
ohm connections, straps are available for the connection of the coaxial cable external shield to the frame
ground (grounding).
2.9. Applicable Norms
ITU-TS: G.651, G.652, G.703, G.742, G.751, G.821, G.823, G.826, G.955, V.11.
Ethernet: IEEE 802.3.
Bridge: IEEE 802.1, 802.1Q Tag-based VLANs, 802.1Q VLAN priority Tag e Port Based VLAN.
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