3. This presentation describes the working functionality of HCTE (C&C08). It fully details the process of call establishment and signaling paths through HCTE.

4. BOARD RACK MODULE FRAME

5. RACKS MODULES FRAMES

6. ASL CARD 1 2 32 DRV BNET OPT NOD DT MPU SIG ANALOG SUBSCRIBERS “BORSCHT” FUNCTION INTEROFFICE DIGITAL TRUNK INTERFACE, 16 DTF = 960 CHANNELS AND 1 DTF = 2 PCM PERFORMS COMMUNICATION b/w MPU AND BOARDS IN USER AND TRUNK FRAMES. PERFORMS EQUIPMENT CONTROL, RECIEVES ASL AND TRUNK STATE THROUGH NOD BOARD AND SEND CORRESPONDING COMMANDS TO THEM. CONTROLS THE SIGNALS OF SIG BOARD (DIAL TONE, VOICE SIGNALS). ANALYZE THE CALLED AND CALLING PARTIES TO HELP OUT SWITCHING FOR THE NOS OF SAME SM. RECEIVES DTMF SIGNALS, DRIVES HW SIGNALS AND SENDS PORT SIGNALS INTRA-MODULE SWITCHING NETWORK BOARD, 4K X 4K SWITCHING NETWORK 40.96 Mbps OPTICAL INTERFACE TO OBC BOARD OF AM/CM OF HCTE. IT’S A PHYSICAL TERMINATION CARD. Signaling path Speech path

8. BAM BCP QSI FSN BAC SPD SRC CID DISPLAY SPCCPC BCC AMP CDP ALARM SNUCNU BDR NCC OBC ET-16 STU CKDCKS EXCHANGE AM/CM HDLC 2Mbps 8Mbps 393M Optical Interface 10 Mbps TCP/IP 10Mbps 2.048Mbps 2.048KHz 8KHz 2.048Mbps 8KHz SERIAL LINK RS-232 SERIAL LINK RS-232 TCP/IP WORK STATION CNET CCM LIM SRM SPM CPM CKM SM 16 E1s 63 STM-1 Communication control module that interlinks CPM, LIM,SPM and CNET through HDLC Admin and maintenance processing and online data setting. Alarm board for all system alarm processing. BUS control process board. Used for BUS communication b/w AMP and CDP. Central database processing and management of common resources. Deals location selection of PBX, trunk line etc. Provides communication bridge b/w OAM and WS. It consists of KVMS, LAN switches, Server and storage media. All the database and programs required by the system are stored here. Centralized clock synchronization to the whole exchange. High Speed interface board that interconnects LIM,CNET and CCM. Provides Speech and Signaling path. Line Interface Module provides linkage of incoming and outgoing traffic to the AM/CM..It contains optical and electrical interfaces at different data rates defined along with a specified capacity. This unit performs routing and switching. It can understand the prefixes. SNU is skirt N/W unit and CNU is the main central N/W unit. NCC performs N/W communication control and BDR is the BUS driver for the interface of this module. Central Processing Module performs various important tasks related to call processing. It performs alarm monitoring and processing, ticket generation for the calls, duration calculation, billing and routing etc. Service processing module provides a variety of interfaces like R2 No.5 and implements SS7 system, provides signaling path. MHI Multi highway interface is a part of LIM and provides 2M & 8M HW Shared resource module provides DTMF, MFC, Conference Telephone and FSK display device services. SPD is signal tone while SRC is shared resource card. Destination Work Station contains a software program that is used to configure boards, monitor alarms, analyze traffic statistics, access the data at BAM storage media and perform several other useful tasks.

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