Cisco Systems 3545 Serial manual DB-25 Connector, Signaling Interface Cable Pin-out Configuration

Chapter 2 Installing the Cisco Unified Videoconferencing 3545 Gateway

Serial Gateway Cable Connections and Pin-outs

DB-25 Connector

Figure 2-18shows the DB-25 pin layout.

Figure 2-18 DB-25 Pin Layout

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Signaling Interface Cable Pin-out Configuration

Table 2-8describes the signaling interface pin-out configuration for the serial gateway cables.

	Table 2-8	Serial Gateway Signaling Interface Cable Pin-out
	Signal Name		Mnemonic	RS-366 (DB-25)
	Shield		—	1
	Digit Present		DPR	2
	Abandon Call & Retry		ACR	3
	Call Request		CRQ	4
	Present Next Digit		PND	5
	Power Indication		PWI	6
	Signal Ground		—	7
	Distant Station		DSC	13
	Connection
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.6
OL-17011-01					2-25