|Excalibur® Multirate SET-1 DAP
Digital Access Product
The Excalibur® Multirate Single-Ended T-1 (SET-1) Digital Access Product (DAP) is designed to reduce the number of digital lines needed in your network. Housed in the high-density Excalibur Card Carrier chassis, central site SET-1 DAPs operate with an internal Excalibur T-1 CSU (Channel Service Unit). Data from up to 24 digital circuits can be transmitted over a single (full or fractional) T-1 link to the Telco, saving up to five times the cost of individual 56/64 Kbps circuits. The Telco demultiplexes the data and distributes it to remote DAPs via any digital data service, including Frame Relay, at rates of 2.4, 4.8, 9.6, 19.2, 56, and 64 Kbps. The DAP's rate adaption feature provides additional speeds when operating on basic digital service with Milgo's non-interruptive secondary channel. This feature allows the port speed to be set at a lower rate than the DDS line.
The Excalibur Multirate SET-1 DAP offers the versatility to change between services as your needs and tariffs change. Choose from several options:
Basic digital service with interruptive secondary channel for diagnostics.
Digital an out-of-band, non-interruptive secondary channel for diagnostics.
Basic digital service with the DAP automatically using a small amount of bandwidth to provide a non-interruptive secondary channel.
Clear Channel 64 Kbps service, which provides 64 Kbps to use for data (57.6 Kbps if non-interruptive secondary channel is used).
In multiport/multidrop applications, the multirate DAP can operate as a multidrop central or remote. The remote units must all be either Excalibur SET-1 DAPs or Excalibur DAPs. The two unit types cannot be mixed.
SNMP or Proprietary Management Protocol
Excalibur Multirate DAPs are available in models that can be fully managed via SNMP or via Milgos proprietary T7 management protocol. The integral MIB-II compliant SNMP agent provides a standards-based management interface, which allows you to manage your complete network via SNMP from a CMS® manager or a generic SNMP manager. The extended MIB includes all functionality found in T7. The multiport/multidrop feature and the analog dial backup option are not available for SNMP models. Full TELNET client support is included with SNMP.
Network Management Capability
For those networks that require comprehensive management, testing, and control features, the Excalibur Multirate SET-1 DAPs can operate with a CMS network management system. A CMS system provides sophisticated database management, performance analysis, fault isolation, and network restoral capabilities from a central location.
Control Unattended Remote Units
For leased line connections with the Excalibur Multirate SET-1 DAP, you can control unattended remote DAPs from the Excalibur Card Carrier control panel. By simply entering the remote DAP's address, you can perform operating procedures as if you were at that site.
Dial Backup Option
In the event your digital lines go down, the Excalibur Multirate SET-1 DAP offers dial backup options. Whether you choose analog lines, Switched 56, or ISDN backup, this option can keep your operation up and running. The dial backup connections can be established automatically or manually.
Typical Multirate SET-1 DAP Application
Excalibur Multirate SET-1 DAP Technical Specifications
|T-1 Link Interface||Internal Excalibur T-1 CSU|
|Network Configurations||Point-to-point, multipoint|
|DDS Channel Rates||2.4, 4.8, 9.6, 19.2, 56, and 64 Kbps|
|DTE Speeds||Synchronous: 1.2 to 52.8 Kbps in multiples of
1200 bps (except 3.6 and 6 Kbps are not provided) and 56, 57.6, 64 Kbps
Asynchronous: 75, 150, 300, 600 bps and 1.2, 2.4, 4.8, 7.2, 9.6, 12, 14.4, 16.8, 19.2, 24, 28.8, 48, and 57.6 Kbps
|DTE Interface||EIA-232-E, V.35|
|CMS Interface||10-position modular jack (T7)|
|SNMP Interface||10-position modular jack, synchronous or asynchronous PPP interface at rates of 2.4, 4.8, 9.6, and 19.2 Kbps|
|Port Clocking||Internal, external, and slave|
|Dial Backup Options||Connections: 2-wire 14.4 or 28.8 Kbps analog, 4-wire
Switched 56 Kbps, or 2-wire Integrated Services Digital Network (ISDN).
14.4 Kbps analog dial backup operates in Programmable or Permissive mode, supports V.32 or V.32 bis+ (Milgo proprietary mode with non-interruptive secondary channel) format.
28.8 Kbps analog dial backup operates in Programmable or Permissive mode and provides V.34 modem support.
Switched 56 dial backup operates at 56 Kbps over MCI's Switched 56 Service, AT&T's Accunet Switched 56 Service, or Sprint's Enhanced Switched 56 Service.
ISDN dial backup operates at 56 or 64 Kbps over ISDN Basic Rate service. It complies with all applicable specifications, including National ISDN-1 standard, Northern Telecom Basic Rate Access, and AT&T Basic Rate Access. It can operate with another DAP equipped with Switched 56 dial backup, providing backup to locations where ISDN service is unavailable.
|Environmental||Operating Temperature: 32° to 122° F (0°
to 50° C)
Storage Temperature: -22° to 158° F (-30° to 70° C)
Humidity: 85%, noncondensing
Our policy of continuous development may cause the information and specifications contained herein to change without notice.
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