RAD Data comm ASMI-450 operation manual A. Typical Application for ASMi-450 with Data Interface

Introduction

∙Ethernet 10BaseT interface. The interface can use unshielded and shielded twisted pair (UTP and STP) media. The ASMi-450 also includes a remote bridge, that can be enabled/disabled by the user.

Figure 1-1 shows a typical application for an ASMi-450 with serial data interface, and figure 1-2 shows a typical application for an ASMi-450 with Ethernet interface.

LAN			LAN
	V.35	HDSL Line	V.35
BRIDGE	768kbps	ASMI-450	768kbps
	ASMI-450		BRIDGE

Figure 1-A. Typical Application for ASMi-450 with Data Interface

LOCAL	REMOTE
	LAN
LAN
	HDSL Line
ASMI-450	ASMI-450

Figure 1-B. Typical Application for ASMi-450 with Ethernet Interface

Serial Data Port Characteristics

Ethernet Interface Characteristics

The user's data port of the ASMi-450/768 and ASMi-450/1152 can be ordered with the following interface options:

∙V.35 interface: 34-pin female connector.

∙X.21 interface: 15-pin D-type female connector.

∙RS-530/RS-422 interface: 25-pin D-type female connector.

∙V.36/RS-422/RS-449 interface: a 37-pin D-type male connector is provided by means of an adapter cable that connects to the RS-530/RS-422 connector.

The user's port interface has two timing options:

∙Internal clock - the ASMi-450 user's port provides transmit and receive clock to the equipment connected to the port.

∙External clock - the equipment connected to the ASMi-450 provides the transmit clock to the user's port, and the ASMi-450 returns a receive clock locked to the external transmit clock.

The Ethernet interface has a 10BaseT interface complying with the IEEE 802.3 standard, and is terminated in an RJ-45 shielded connector, which can operate over UTP and STP media.

1-2 ASMi-450 Installation and Operation Manual