AT&T MERLIN LEGEND Installation & Maintenance Manual page 194

Installation
2. Ground the ring lead by pushing the ground key or by
grounding one side of the line/trunk.
3. Pick up the handset.
You should hear a dial tone.
4.
Remove the ground from the ring lead.
5. Dial a known telephone number to verify dialing. Also check
that you have good two-way transmission after the CO
completes the connection.
6. If you find a CO line that does not have a dial tone, check for
a bad adapter or loose connections.
7. If adapters and wiring are in working order but you still don't
hear a dial tone, notify the customer.
8. If outward dialing is not possible on any of the lines, notify the
customer.
Note: It is the customer's responsibility to report service
outages to the local telephone company.
Labeling CO Lines/Trunks
You can have up to 80 CO line jacks on the communications
system (01 to 80). Follow the procedure in this chapter to label
each D2R or D8W cord, network interface jack, and CU module
jack.
Procedure
1. Review the system planning forms to determine each CO line
assignment on the CU.
2. Place a green cord label (packaged with the basic carrier) at
each end of every D2R or D8W cord. The green label
indicates the number of the CO line jack to which the cord is
connected.
3-86 System Wiring