AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 14

Customer Support Information
Means of Connection. Connection of this equipment to the telephone
network shall be through a standard network interface jack:
USOC RJ11C, RJ14C, RJ21X. Connection to E&M tie trunks requires a
USOC RJ2GX. Connection to off-premises stations requires a
USOC RJ11C or RJ14C. Connection to 1.544-Mbps digital facilities must
be through a USOC RJ48C or RJ48X. Connection to DID requires a
USOC RJ11C, RJ14C, or RJ21X. These USOCs must be ordered from
your telephone company.
This equipment may not be used with party lines or coin telephone lines.
Notification to the Telephone Companies. Before connecting this
equipment, you or your equipment supplier must notify your local
telephone company's business office of the following:
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You must also notify your local telephone company if and when this
equipment is permanently disconnected from the line(s).
The REN is used to determine the number of devices that may be
connected to the telephone line. Excessive RENs on the line may result
in the devices not ringing in response to an incoming call. In most, but
not all, areas the sum of the RENs should not exceed five (5.0). To be
certain of the number of devices that may be connected to the line, as
determined by the total RENs, contact the telephone company to
determine the maximum REN for the calling area.
xii Customer Support Information
The telephone number(s) you will be using with this equipment.
The appropriate registration number and ringer equivalence
number (REN), which can be found on the back or bottom of the
control unit, as follows:
If this equipment is to be used as Key System, report the
number AS593M-72914-KF-E.
If the system provides both manual and automatic selection
of incoming/outgoing access to the network, report the
number AS593M-72682-MF-E.
If there are no directly terminated trunks, or if the only
directly terminated facilities are personal lines, report the
number AS5USA-65646-PF-E.
The REN for all three systems is 1.5A.
For tie line connection, the facility interface code (FIC) is TL31 M
and the service order code (SOC) is 9.0F.
For connection to off-premises stations, the FIC is OLI3C and
the SOC is 9.0F.
For equipment to be connected to 1.544-Mbps digital service,
the FIC is 04DU9-B for D4 framing format or 04DU9-C for
extended framing format, and the SOC is 6.0P.
For equipment to be connected to DID facilities, the FIC is
02RV2-T and the SOC is 9.0F.
The quantities and USOC numbers of the jacks required.
For each jack, the sequence in which lines are to be connected:
the line types, the FIC, and the REN by position when applicable.