AT&T 7500 series, 7100 series, 2500 series, 7200 series manual Figure B-1 Options for Synchronization

xiiCONTENTS

____________________________________________________________________________________________________________________________
_
Figure 8-9.	Common ISN Configuration	8-18
Figure 8-10.	LAN-to-LAN Connections Through the Switch	8-19
Figure 8-11.	X.25/StarGROUP Connectivity	8-20
Figure 8-12.	LAN/SNA Connectivity	8-20
Figure 8-13.	ACCUNET Packet Service	8-22
Figure 8-14.	Public Switched Data Network with Robbed Bit Facilities (Mode 1)	8-23
Figure 8-15.	Domestic Public Switched Data Network with ISDN-PRI Facilities (Modes 0, 1, 2,
	3)	8-25
Figure 8-16.	International Public Switched Data Network with ISDN-PRI Facilities (Modes 0,
	1)	8-25
Figure 8-17.	Private Data Network with Robbed Bit Trunks (Mode 1)	8-26
Figure 8-18.	Private Data Network with Robbed Bit Facilities and D4 Connection at Far End
	(Mode 1)	8-28
Figure 8-19.	Private Data Network with 24th Channel or ISDN-PRI Signaling (Modes 0, 1, 2,
	3)	8-28
Figure 8-20.	Private Data Network with 24th Channel or ISDN-PRI Signaling (Modes 0, 1, 2,
	3)	8-28
Figure 8-21.	Private Data Network with Robbed Bit, Fractional T1 Facilities (Mode 1)	8-30
Figure 8-22.	Telemarketing Gateway Configuration	8-32
Figure 9-1.	Dedicated/Permanent Switched Connections — Configurations (Sheet 1-or-
	2)	9-3
Figure 9-2.	SNA-Node to SNA-Node Connection	9-5
Figure 9-3.	A Possible File-Transfer Configuration	9-6
Figure 9-4.	A Possible Teleconferencing Configuration	9-7
Figure 9-5.	A Possible Imaging Configuration	9-8
Figure 9-6.	A Possible FAX Configuration	9-8
Figure B-1.	Options for Synchronization	B-2
Figure B-2.	Synchronization Hierarchy	B-4
Figure B-3.	Stratum Levels for the Synchronization Hierarchy	B-7
Figure B-4.	SCS (Generic 2)	B-8
Figure B-5.	Duplicated Synchronization Architecture and Cross Coupling	B-9
Figure B-6.	Tone-Clock Synchronizer (Nonduplicated, Generic 1)	B-12
Figure B-7.	Public-Network External Clock	B-15
Figure B-8.	External Clock	B-16
Figure B-9.	External-Clock Interface	B-17
Figure B-10.	External-Clock Duplicated Synchronization	B-17