Alcatel-Lucent 1511 BA manual Architecture, Applications

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.

2 Alcatel-Lucent 1511 BA 2 Mb/s 30-Channel Primary Rate Multiplexer Data Sheet