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As competition for dial tone continues, service providers must find integrated access devices that allow cost effective deployment of voice and data services at the customer's premises. ADTRAN's Total Access 750, a low-cost integrated access device, allows service providers a means to offer combined voice and data traffic over a single T1 terminating at a customer's premises. The Total Access 750 supports a broad service offering including analog voice (FXO/ FXS), Nx Data, Fractional T1, ISDN and DDS.
The Total Access 750 provides seven slots for the user to combine a variety of voice and data services based on the specific requirements of each application. Up to six Quad FXS or FXO access modules provide up to 24 analog voice lines. Data options include a Fractional T1 port, as well as DDS, ISDN, and Nx56/64 access modules. The Fractional T1 Drop-and-Insert port on the rear of the unit provides a convenient method of dropping a number of DS0s to a PBX or other equipment via a DSX-1 signal.
The design of the Total Access 750 lends itself to cost-efficient growth or a 'grow-as-you-go architecture. Many applications require only a limited amount of analog circuits and, therefore, do not warrant purchasing or installing 12 or 24 ports as required with other non-modular designs. The benefits of the Total Access 750 modularity are also found in cost-per-port comparisons and data applications. Because a provider only installs the amount of voice ports needed for the subject application, initial turnup cost and per-port cost are lower. This is because the provider can defer channel unit cost until it is needed. And in data applications, the Total Access 750 provides the flexibility to mix voice and data units also based on the particular requirements of each application.
Up to 95% Non-condensing Relative Humidity Operating
-40°F (-40°C) to 158°F (70°C) Operating / -22°F (-30°C) to 158°F (70°C) Storage
Manufacturer Part Number
Manufacturer Website Address
Total Access 750 Gateway
(7 Total) Expansion Slot / (1 Total) Bank Controller Unit
Number of Expansion Slots
Occupies one half of two rack units (2U) Supports wide variety of services - 24 analog voice (FXS/FXO) circuits, Nx56/64 Data, Fractional T1, DDS, ISDN Supports TR-08 signaling Automatic gain adjustment on analog units (FXS, FXO) Integrated T1 CSU Access modules are hot swappable and accessible at all times. The 4-circuit-per-card design ensures a maximum of only four analog circuits are affected when replacing a channel unit (as opposed to 12 with other non-modular systems). Framing: D4(SF)/ESF/TR-08 ANSI T1.403 Line Code: AMI/B8ZS T1 Transmit Timing: Loop, Local, External TR-08 Support: Conforms with TR-TSY-000008 TR-08 Mode I SLC96R framing with alarm reporting/monitoring Automatically configures to ORB-13 or ORB-16 alarm messaging formats Single Party Ringing (SPR) and Universal Voice Grade (UVG) analog ports supported with FXS modules. CLASSR services also supported with these modules. Performance Monitoring: Reports: NI information stored for last 8 hours (60-minute increments) PRMS: ANSI performance report messages
Certifications & Standards
NEBS Level 3 Agency Approvals: UL 1950 FCC Part 15 (Class A) FCC Part 68
3.50" Height x 8.50" Width x 11" Depth
Rack-mountable / Wall-mountable
Compatible Rack Unit
Control In / Control Out Ports
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