Product Descriptions

BBS Logo

Products:

Plexus

Product Descriptions

Digital Switch Processor (DXP): A specific slot in each system is reserved for the Digital Switch Processor card. This card contains the digital switch matrix and the main Central Processing Unit (CPU). An array of Digital Signal Processors (DSPs) provides various resources such as tone detection and generation. The fully digital architecture ensures high quality digital voice and data transmission.

The serial port located on the DXP card is used to connect to a Windows-based PC. Configuration files, developed using the Plexus Administrator Windows application, are uploaded via a serial link between the DXP card and the PC. Plexus Administrator can be used to configure all aspects of the system. Since non-volatile memory is used to store the configuration information, the system does not have to be reconfigured following a power shutdown.

The Switch Operating System (XOS) or firmware is stored in flash-memory devices on the DXP card to facilitate easy operating system upgrades. The upgrades are uploaded to the DXP card using Plexus Administrator in a manner similar to the configuration upload discussed above.
Analog Trunk Interface Card (ATI): The Analog Trunk Interface card provides either 4 or 8 analog trunk ports. The ports are designed to accept loop start lines from the CO and are fully compatible with Centrex Services and Caller ID (name and number) information. Other call enhancing facilities include disconnect supervision to CO signals like Clear Forwarding and Polarity Reversal.
Analog Extension Interface (AEI): The Analog Extension Interface card provides 8 hybrid-key extension ports. Hybrid-key refers to the system's ability to accept the input of Plexus Analog Key Telephones, ordinary phones, or single-line telephone devices at each analog extension port. The interface automatically adjusts for tone or pulse (rotary) dialing when an ordinary phone or single-line telephone device is connected. The single-line capability of the extension port accommodates fax devices, answering machines, modems, cordless telephones, door phones, and external voice mail systems. Unlike other systems, no specialized adapters are needed to accept such devices.
Digital Extension Interface (DEI): The Digital Extension Interface card provides 8 digital extension ports. These ports are designed to operate with the Plexus Digital Key Telephones. Due to the digital signaling, these ports are not compatible with Plexus Analog Key Telephones or other analog phone devices (see Analog Extension Interface).
Analog Combination Interface (ACI) - Micro Plexus only: The Analog Combination Interface card is provided as an expansion option for the Micro Plexus system only. It contains 4 trunk ports and 8 hybrid-key analog extension ports and is inserted into one of the plug-in facilities.

The trunk ports are designed to accept loop start lines from the CO and feature Caller ID (name and number) detection and disconnect supervision.
Hybrid-key refers to the system’s ability to accept the input of Plexus key telephones, ordinary phones, or single-line telephone devices at each analog extension port. The interface automatically adjusts for tone or pulse (rotary) dialing when an ordinary phone or single-line telephone device is connected. The single-line capability of the extension port accommodates fax devices, answering machines, modems, cordless telephones, door phones, and external voice mail systems. Unlike other systems, no specialized adapters are needed to accept such devices.
Inter-Unit Link Interface (ILI): The Inter-Unit Link Interface card, when installed in each system, allows for the integration of any two systems, providing a seamless expanded switch. Connecting two Macro Plexus systems provides capacity for a total of 128 analog ports.

Each cabinet in an expanded configuration has the ability to operate as a stand-alone system. However, use of the ILI card provides other signaling information, enabling the linked units to cooperate as a single system.
Auto-Attendant Interface (AAI): The Auto-Attendant Interface card provides an integrated four-channel auto-attendant supporting up to 4 twenty-second greetings. Each greeting may utilize up to 10 dial digit mappings (e.g. "Press 1 for Sales").
Integrated Voice Processor (IVP): The Integrated Voice Processor card provides integrated voicemail capabilities to the Plexus systems. Available models support from 4 to 24 channels. The base configuration of the IVP offers over 40 hours of recording time, 511 mailboxes, and the ability to utilize up to 10 simultaneous auto-attendant trees. The serial port on the IVP card is used to archive stored voice mail messages on the IVP card hard drive.
Digital Switch Processor with Computer Telephony Integration (DXP-CTI): BBS Telecom is developing a Computer-Telephony Interface (CTI) solution aimed at small centers. The Plexus Telephone System uses the new CTI-version of the DXP card to provide third party call control using CSTA-standard commands. Dialogic’s CT Connect provides high level TAPI, TSAPI, and CT Connect APIs and is a required part of the solution.

Please contact your BBS Telecom representative for further details on the Plexus CTI solution.
Direct Inward Dial Analog Trunk Interface (DID): Direct Inward Dialing (DID) is service offered by telephone companies in which the last digits (typically two to four) dialed by the caller are forwarded to the system on a DID trunk. DID allows the system to have several inbound dialed numbers that route directly to different users, user groups, auto attendants, fax machines, etc. DID also allows the system to have more telephone numbers than it has trunks because not all telephone numbers will be in use at the same time.
T1 / E1 CAS: Channel Associated Signaling (CAS) is a generic name for a signaling method used on T-1 and E-1 carriers. T-1 uses Robbed Bit Signaling (RBS). This method utilizes all 24 channels for voice, data, and signaling, offering 24 voice channels for the Plexus system. E-1 provides 30 ‘clear’ channels for voice. The two remaining channels are reserved for framing and signaling. Each voice channel represents a digital trunk into the Plexus system.
ISDN PRI: ISDN PRI is an interface between a user and a digital telephony network capable of delivering many types of services. PRI can be implemented on either a T-1 or an E-1 carrier. In both cases, the full bandwidth of the bearer or B-channels is available for the transmission of voice. T-1 ISDN PRI offers 23 voice channels. E-1 ISDN PRI offers 30 voice channels. Each voice channel represents a digital trunk into the Plexus system.
ISDN BRI: ISDN BRI is a communication protocol that utilizes existing local loop wiring (i.e., standard 2-wire, single pair) to carry a digital signal. This signal can be split into two separate voice or data channels. A four port ISDN BRI card offers up to eight voice channels. Each voice channel represents a digital trunk into the Plexus system.
PVT-30 and PVT-30D analog key telephones: The PVT-30 series is comprised of two analog key telephone models designed for use with the Plexus Hybrid-Key Digital Telephone System. Both models offer 52 interface keys including 20 programmable keys, speakerphone, message waiting display, and many other feature keys. The programmable keys can be set to monitor extensions or trunks or provide access to features, functions, or speed dial numbers. Several of the programmable keys on the PVT-30D can be set to access features by default.

The PVT-30D offers a Liquid Crystal Display (LCD) capable of displaying system status messages and Caller ID information.
PDT-30D digital key telephone: The PDT-30D is a digital key telephone model designed for use with the Plexus Hybrid-Key Digital Telephone System. This phone requires only a two wire (single pair) connection to the Plexus system. The single pair wiring can help cut installation costs. The phone is not polarity sensitive, which prevents polarity reversal problems. The PDT-30D offers 52 interface keys including 20 programmable keys, speakerphone, message waiting display, and many other feature keys. The programmable keys can be set to monitor extensions or trunks or provide access to features, functions, or speed dial numbers. Several of the programmable keys on the PDT-30D can be set to access features by default.

The PDT-30D offers a Liquid Crystal Display (LCD) capable of displaying system status messages and Caller ID information.
DSS-60 Analog Operator Console: The DSS-60 Analog Operator Console provides 60 programmable keys for use in monitoring extensions or trunks, provide access to features or functions, or as filter keys for special applications (e.g., Hotel and Motel). The DSS-60 Analog Operator Console is for use with PVT-30 and PVT-22 series analog key telephones.
DDSS-60 Digital Operator Console: The DDSS-60 Digital Operator Console provides 60 programmable keys for use in monitoring extensions or trunks, provide access to features or functions, or as filter keys for special applications (e.g., Hotel and Motel). The DDSS-60 Digital Operator Console is for use with PDT-30D and PDT-22D digital key telephones.
Plexus Door Phone: The Plexus Door Phone is a hands-free intercom device. The Door Phone has a single illuminated button to activate a call and a speaker to perform the hands-free speakerphone operation.

Plexus

Product Descriptions

Digital Trunk Interfaces (T1, E1, ISDN)

Additional Equipment