Panasonic CPC-EX manual System Size EC/TRK Slot Usage for T1 Master Slave

	Section 300-Installation			Chapter 4. Trunks and Lines
Table 4-8. T1 slot usage for two-cabinet systems
		System Size	EC/TRK Slot Usage for T1
			Master		Slave
		DBS 40 + DBS 40	No		Yes
		DBS 72 + DBS 40	No		No
		DBS 72 + DBS 72	No		Yes
		DBS 96 + DBS 40	Yes		Yes
		DBS 96 + DBS 72	Yes		Yes
		DBS 96 + DBS 96	Yes		Yes

•Fractional T1 can be used when fewer than 24 T1 trunks are needed. Fractional T1 allows you to use only a portion of the 24 channels provided on the T1 card.

•Though each T1 Interface provides 24 trunk channels, T1 trunks do not increase the overall trunk capacity of the DBS. Each T1 channel subtracts from the total number of analog trunks that can be installed.

•With CPC-B earlier than 5.00, the number of analog trunks that can be used with Fractional T1 are always decremented in quantities of 8.

For example, if you are installing a T1 in a DBS 96 and you only want to use 12 T1 channels, the logical number of analog trunks that would be available is 20 (32 - 12 = 20).

The number of analog trunks must be decremented in quantities of 8, the actual number of analog trunks that can be used is 16:

(32 total trunks - 16 (two 8-trunk increments) = 16.)

Tables 4-9through 4-11show the possible combinations of analog and digital trunks assignments based on system size.

The trunk numbering shown in these tables is determined by backplane trunk port assignments. Therefore, the numbering cannot be changed.

•With CPC-B 5.00 and higher and the VB-43511A Loop Start Trunk Card, the number of analog trunks that can be used with Fractional T1 are decremented in quantities of 1.

Note: Analog trunks are numbered beginning with “1.” T1 trunk channels are numbered beginning with the highest trunk channel used.

DBS-2.3/9.2-300 DBS Manual - Revised April 2000 4-13