Vanguard Managed Solutions 7300 Series installation manual Serial Transition Module Rear View

Vanguard 7300 Cards

Port Timing	Group Clock set to		Group Clock set to Card		Card Clock set to
	Group Clock			Clock	System Clock
Sec-Ext	External device provides a	External device provides a			External device provides a
	clock to this port and if it is	clock and if it is the first			clock and if it is the first
	the highest priority port that	highest priority port			highest priority port
	is synchronized, drives	synchronized, drives Card			synchronized, drives System
	Group Clock	Clock.			Clock.
				Note
		Group must be set to Card
		Clock for voice connections.
Prim-Ext	External device provides a	External device provides a			External device provides a
	clock to this port and if it is	clock and if it is the first			clock and if it is the first
	the highest priority port that	highest priority port			highest priority port
	is synchronized, drives	synchronized, drives Card			synchronized, drives System
	Group Clock.	Clock.			Clock.
				Note
		Group must be set to Card
		Clock for voice connections.

Serial Transition The Serial Rear Transition Module provides eight SSIO connectors:

Module - Rear View

Figure 2-26. Serial Transition Module Rear View

Serial Transition The pinouts for the Serial Card’s SSIO connectors are listed in Appendix B,

Module Pinouts Vanguard 7300 Cable Connectors and Pinouts.

2-38 Vanguard 7300 Enclosures and Components