Lucent Technologies Comcode 108678723 manual Trunk groups, ATM-CES trunk board

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000

5Administering ATM-PNC and ATM-CES

Administering DEFINITY ECS 5-10

Table 5-7. DEFINITY ECS trunk capacities by model

Capacity	c, csi, si	r
Maximum trunks per trunk group	99	255
Maximum number of trunk groups	99	666
Maximum number of trunks in the system	400	4000

Trunk groups

At least one trunk group is typically created for each remote switch with these attributes (see Screen 5-8):

■Group Type field is isdn

■Carrier medium field is atm

■Dial Access? field is always n

■TN2305/TN2306 may have Trunk Access Codes (TAC), but these are for reporting purposes only and cannot be dialed.

■CDR records for ATM trunk calls are maintained.

NOTE:

Release 7 introduced 3-digit port numbers for administering a CES trunk, and CMS cannot read the old 2-digit numbers. Release 8 CMS software can read both the 2- and 3-digit port numbers.

■A trunk group may include ports from more than one of the ATM circuit packs in the system. This enables same module preference, the feature that gives preference to outgoing trunks on the same port network as the originator.

■ATM trunk groups can only contain ports on ATM boards, and ports on ATM boards cannot be assigned to non-ATM trunk groups.

ATM-CES trunk board

When administered as a trunk board, the TN2305/TN2306 can have up to 8 ATM signaling groups with up to 30 members per signaling group over an OC-3/STM-1 connection. Although the ATM board does not have physical ports,