Alcatel-Lucent 1511 BA | 2 Mb/s 30-Channel Primary Rate Multiplexer
| Data Sheet
2
Architecture
The PCM Controller (PCMC2) interfaces
the users and the E1 aggregate side.
The controller connects the analog,
data or N x 64 kb/s data terminal
channels of the tributary boards,
or the PCMC2 in slave mode, to the
2,048 kb/s G.703/G.704 aggregate
via an internal serial bus.
The PCMC2 provides:
• A transmission/switching interface
and HDB3 to binary coding/decod
-
ing, retiming, frame alignment and
supervision, cyclic redundancy check
#4 (CRC4) generation/monitoring,
channel mapping, CAS, alarm treat
-
ment and test facilities
• An asynchronous serial communi
-
cation channel to a central alarm
supervising unit through which the
user can communicate about equip-
ment configuration, status and alarms
• Two serial channels for embedded
operation channel (EOC). These
channels can be used for transport
of network management protocols
between the network element and
its centralized management units.
Power unit boards for DC/DC and AC/
DC conversion are provided for each
subrack assembly and can be dupli-
cated for redundancy.
Applications
POTS Subscriber Multiplexer
The POTS subscriber multiplexer is used
in the subscriber network and allows a
flexible mix of voice and data inter
-
faces. Adaptation of the signaling to
the customer’s requirements can be
done easily.
ISDN-BRI
The Alcatel-Lucent 1511 BA can be
used for ISDN-BRI applications. Both
2- and 4-wire (U with line code 2B1Q
and S0/I.430) interfaces are available.
Each interface uses three timeslots
(2B + D16/M) on the 2 Mb/s G.703 link.
Hot Line
Hot Line is a bi-directional application,
with a centralized battery set, where
one subscriber hooks off and the other
is called without dialing. It uses the
same board as the POTS application.
This board’s lines can be programmed
either as a POTS or Hot Line.
Ringdown
Manual Ringdown (MRD) is an Alcatel-
Lucent 1511 BA application that permits
the connection of two local battery
(LB) telephone sets or the connection
of a local battery telephone set to a
central switch board. This application
is widely used by stock market brokers.
It requires the use of a special ring-
down board.
Direct Dialing In
The Alcatel-Lucent 1511 BA provides
direct dialing in (DDI), a feature whereby
the dialing information is sent directly
from the PSTN to the PABX, which
then sets up the connection to the
PABX subscriber.
Data Multiplexer
The Alcatel-Lucent 1511 BA can be used
as a data multiplexer. The possible data
tributaries are:
• 64 kb/s G.703 co-directional — with
optional E&M signaling
• 64 kb/s G.703 contra-directional
• 2 Mb/s and N x 64 kb/s G.703/G.704.
(fractional E1)
• Low speed: 75 b/s to 64 kb/s for V.36,
V.35, V.28 and X.21
• N x 64 kb/s (N = 1 to 31); interfaces:
V.35, V.36 and X.21
Remote Data Unit
The Alcatel-Lucent 1511 BA provides an
integrated digital interface to remote
data units (RDUs). The RDUs are provided
with one or two of the following inter-
faces in any combination: V.35, V.36, X.21
and V.24/V.28 up to 128 kb/s, analog
and 64 kb/s G.703 co-directional inter
-
faces. Performance monitoring on the
RDU is foreseen on the digital link.
High Quality Audio Tributaries
The Alcatel-Lucent 1511 BA can per-
form unidirectional audio transmission.
This audio board uses MPEG-2 15 kHz
sampling.
2/4-Wire Audio Interface
Connection between analog modems
or PABX ports for tie-line connections
can be achieved with the 2/4-wire
audio board. Variants with or without
E&M wires are available.
Conference Bridge
Two types of conferences are possible:
• Master-slave conference: One partic
-
ipant is considered the “master” and
all others are considered “slaves.”
One master with up to 29 slaves is
possible.
• Full conference: This type of confer
-
ence is used when all participants
need to share information equally.
Every participant receives informa-
tion from all other participants but
himself or herself.
These two types of conferences can be
used for voice, data or signaling.
The conference bridge is a simple and
useful board in networks with super-
visory control and data acquisition
(SCADA) and/or audio dispatching
requirements.
Dry Relay Contacts
This board has a number of detectors
for dry relay contacts. It is used for
collecting alarm indications of col-
located equipment and enables the
visualization of alarm states on the
same craft terminal or server as that
being used for the multiplexer
functions.
Integrated Optical Transport
Boards for optical PDH transport of
4 or 16 E1 streams can be plugged into
the Alcatel-Lucent 1511 BA subrack and
managed by the same management
tools. See the Alcatel-Lucent 1521 FL
and the Alcatel-Lucent 1531 FL.
