AT&T DS1/DMi/ISDN-PRI manual DS1/ISDN-PRI Administration Channel Versus Trunk Assignments

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-37

TABLE 7-3.DS1/ISDN-PRI Administration — Channel Versus Trunk Assignments

DS1 Channel	Slot/Circuit	DS1 Channel	Slot/Circuit
1	*/0	13	*+1/0
2	*/1	14	*+1/1
3	*/2	15	*+1/2
4	*/3	16	*+1/3
5	*/4	17	*+1/4
6	*/5	18	* +1/5
7	*/6	19	*+1/6
8	*/7	20	*+1/7
9	*/8	21	*+1/8
10	*/9	22	*+1/9
11	*/1O	23	*+1/10
12	*/11	24	*+1/11

LEGEND:

*Any slot for the TN767 except slot number one in the universal port carrier. *+ 1 The slot next to the TN767 or TN555.

NOTE: Channel 24 is the D-channel.

NOTE: When the equipment carrier is configured with two DS1s, physical slots 3, 8, 16, and 21 are available for other applications. If only one DS1 is configured, then six additional slots are available for other applications.

To minimize confusion and eliminate the need for maintaining elaborate trunk to channel cross- reference tables, trunk group member assignments should match the DS1 channel assignments (for example, trunk group member 1 should be on channel 1). When using procedure 116, word 1, refer to Table 7-2,Trunks Supporting Signaling Type 20, to determine which slot and circuit to translate for channel 1. Repeat this procedure by sequentially selecting DS1 channels (2, 3, and so on) and translating the appropriate slot and circuits as required.

Fields 1-5	These fields are used to translate the equipment location, including slot and circuit
	(channel) location, and to associate the equipment location (channel) with the
	particular trunk group translated in field 6.
Field 6	Translates the trunk group. Permitted encodes must be numbers with the range of
	18 through 999.
Field 7	Translates a particular number that functions as the night service number. The
	number of digits depend on the particular application and its numbering plan.