INTRODUCTION

The Model 48-MAX Interconnected Repeater Panel is the latest, most powerful shared customer interconnect available from Zetron. It is designed for service providers who need the best in performance and reliability in order to compete most effectively when providing mobile communication services.
The 48-MAX may be equipped with previously unavailable capabilities, such as owner-recordable voice promotes, enhanced toll restriction, a telephone line expander, and intersystem roaming for wide-area coverage. These and other features ensure continued profitability and competitiveness for providers of radiotelephone interconnect service.
In addition to service providers, the M48-MAX is also ideal for private, user-owned systems that need a high degree of versatility and numerous convenience features.
Zetron customers will recognize that the 48-MAX is similar to the Zetron Model 48B Repeater Manager but with the addition of many exclusive, high-end features. For ease of configuration, the M48-MAX is available in three version: Basic, Selcall, and Roamer.

FEATURES

• Shared radiotelephone interconnect with up to 750 user identities (ANI)
• Available in 3 versions: Basic, Selcall, & Roamer
• Operation with wide range of simplex or duplex mobile or hand-portable radios
• Encodes and decodes 50 CTCSS, 104 DCS
• 2-tone, 5-tone (PZVEI, EIA, CCIR, EEA), DTMF selective calling
• Intersystem roaming capability for wide area coverage (wild ANI)
• Interconnect Gateway for switchless, intersite dispatch
• Owner-recordable voice prompts (option)
• Enhanced toll restriction
• PC-programmable with built-in modem
• Billing records for up to 4000 calls (option)
• 99 autodial telephone numbers
• Conversation timers with �hog� penalties for both interconnect and dispatch calls
• EMC Approval, CE conformity

SUPERIOR FEATURES

Scheduled Telco Access (Selcall & Roamer Versions)
With scheduled telco access, the 48-MAX may be programmed such that telephone calls (both incoming and outgoing) occur during certain hours of the day only. The system owner also defines which ANI codes,  any, are allowed to access the telephone line during those periods. The owner may thus charge more for radio users who desire to use the telephone line during the restricted hours.

Scheduled telco access is a good way to preserve more airtime for dispatch (radio-to-radio) traffic. Telephone calls tend to be long, while dispatch calls are shorter in duration. Limiting telephone access during peak hours is a good method of freeing up more dispatch activity�a priority for many service providers.

Enhanced Toll Restriction
The 48-MAX is equipped to restrict telephone calls on both modern and older telephone systems. It takes into account the latest dialing procedures that have evolved within telephone networks worldwide. The toll restrict methods are designed for both versatility and customization. For instance, a prefix table can be created that specifies valid or invalid three-digit prefixes. This feature is particularly useful in metropolitan areas where it's possible to dial long-distance calls without dialing an area code.

The 48-MAX also �understands� area codes which don't necessarily have 0 or 1 as the second digit. To support a wide range of applications, any sequence of 2, 3, or 4 digits can be specified as valid or invalid.
Toll restrictions can be applied on a per-user basis. Some users can be restricted to local calls, some users can be provided with full access, and some users can be restricted to dialing pre-set autodial numbers only. The toll-restrict methods are very versatile. They take into account the latest dialing conventions such as 1-888 calls, 10-digit local calls, long-distance codes (10+ATT, 10-321, etc.) and PBX procedures.

Interconnect Hog Penalty
Some radio users have learned that when their conversation time runs out they can �hog� an interconnect by hanging up and then quickly dialing another telephone number, before another radio user has a chance to react. The interconnect hog penalty prevents the same radio user from placing back-to-back calls for a programmable period of time (0 to 250 seconds). This prevents someone with a speed-dial microphone or control head from beating other users in entering an access code and taking over the system for endless minutes at a time.

Radio Call Forwarding
Radio call forwarding is a feature that comes in handy on many systems. If a call to a field unit (mobile radio, hand-portable radio) is not answered after a programmable number of rings, the call can automatically be forwarded to a different field unit, including a pager. One of the most convenient applications is allowing a mobile-radio user to receive a call on a lightweight tone or tone-voice pager when away from the vehicle.
When a call is forwarded, the transaction is recorded in the billing database so that the owner may charge extra for the feature if desired.

Other Features

• Call-Alert Beeps: notifies radio-to-radio talkers that a telephone party is attempting to place a call to a radio. The radio users may then elect to terminate their call so the phone party can get through.
• 99 Autodials: for ease of dialing by the radio users, the owner may create up to ten blocks of autodials. A user is assigned to a block, and an autodial is initiated by * plus a single digit. If desired, radio users may be limited to autodials only, with no manual dialing privileges.
• PBX Support: a hookflash signal may be initiated from a radio to manipulate PBX functions. This can give access to many PBX functions such as conference calls or call forwarding.
• XMODEM Support: the industry standard XMODEM data transfer protocol, available in most off-the-shelf communication programs (e.g. Windows), is all it takes to establish PC communications with the 48-MAX. not support the XMODEM (Note: the utility ZCU does protocol.)
• Cross-Tone, Cross-Code, and Tone-Code
  Encoding: radio users may call radios that operate on other tones/codes. The �crossed� tones/codes may be programmed into the database, or may be initiated with selective calling.
• Two End-to-End Telephone Inputs: the second telephone input can be used in many ways by the creative system designer. For instance, it provides an easy method of separating users into different levels of telephone access privileges. It also allows one line to be a �priority override� line for emergency calling.

Specifications

PHYSICAL SPECIFICATIONS

DISPATCH CAPACITY

INTERCONNECT CAPACITY

ACCOUNTING

DECODER SPECIFICATIONS

TELEPHONE INTERFACE SPECIFICATIONS

RADIO INTERFACE SPECIFICATIONS

ADDITIONAL SPECIFICATIONS