Select Entry Systems ALXCPUSLT Alliance Voice Processor Lite Call Processing Unit Details
The Select Entry Systems ALXCPUSLT is the Alliance Voice Processor Call Processing Unit Lite for no-phone-bill access control systems. It is designed for smaller apartment, condominium, office, dormitory, housing authority, nursing home, private community, and multi-tenant building applications where the system needs to use existing inside telephone wiring without adding a separate business telephone line for the entry system.
This ALXCPUSLT version holds up to 4 ALXLC line cards. Each ALXLC line card supports up to 12 telephone lines, so a fully populated ALXCPUSLT can interface with up to 48 phone lines. The ALXLC line cards are normally sold separately unless the current supplier package specifically states otherwise.
What This Unit Does
The ALXCPUSLT acts as the call processing module for a compact Alliance Voice Processor installation. It works with compatible SES entrance control equipment and the building's internal telephone wiring so visitors can call residents from the controlled entrance. Residents can identify entrance calls by a distinctive double-ring pattern and release the entrance by dialing the programmed access tone when the system is properly installed and programmed.
- Provides call processing for SES Alliance Voice Processor no-phone-bill systems.
- Uses existing inside building telephone wiring.
- Helps avoid a separate outside business telephone line dedicated to the entry system.
- Holds up to 4 ALXLC line cards.
- Supports up to 48 phone lines when populated with 4 ALXLC line cards.
- Line cards are sold separately unless supplier package contents confirm otherwise.
- Supports resident door release by programmed touch-tone command when installed correctly.
- Supports distinctive double-ring entrance calls, call waiting, optional music-on-hold, postal lock provision, optional card access, and optional remote programming depending on the complete system design.
Compatible With
The ALXCPUSLT is a dedicated component for Select Entry Systems / Select Engineered Systems Alliance Voice Processor no-phone-bill access control systems. It should be used only where the complete building telephone wiring, entrance panel, line card, and access control design match the Alliance system architecture.
- Select Entry Systems Alliance Voice Processor systems.
- Select Engineered Systems Alliance No Phone Bill access control systems.
- ALXLC 12-phone line cards, sold separately unless confirmed.
- Compatible SES entrance control panels selected for the Alliance system.
- RJ71C network interface applications where specified by system design.
- Buildings with up to 48 phone lines when fully populated with 4 ALXLC line cards.
- Apartment buildings, condominiums, dormitories, nursing homes, housing authority developments, private residential communities, office buildings, and similar multi-tenant facilities.
Important Compatibility Warning
The ALXCPUSLT is the Lite version of the Alliance call processing unit. It holds up to 4 ALXLC line cards and has no expansion capability. Do not use it in place of the ALXCPUS expandable version if the project requires more than 48 phone lines, additional ALXLEP expansion panels, or future growth beyond the 4-card limit.
This is not a standalone telephone entry panel, keypad, cellular module, gate operator controller, or line card. The ALXCPUSLT must be matched with the correct SES entrance equipment, ALXLC line cards, interface wiring, transformer, relay or lock control equipment, and building telephone wiring layout.
Comparison With Similar Alliance Components
- ALXCPUSLT: Alliance Call Processing Unit Lite. Holds up to 4 ALXLC line cards and interfaces with up to 48 phone lines. No expansion capability.
- ALXCPUS: Expandable Alliance call processing unit. Includes one ALXLEP expansion panel that holds up to 8 ALXLC line cards and can be expanded with additional ALXLEP panels.
- ALXLEP: Line Expansion Panel used with the expandable ALXCPUS system. It is not used to expand the ALXCPUSLT beyond its 4-card limit.
- ALXLC: 12-phone line card used to connect phone lines to the Alliance system. Sold separately unless package contents confirm otherwise.
- ALRJ71C: Related Telco interface block used where specified by the Alliance system design.
Similar Parts That Are Not Automatically Interchangeable
- ALXCPUS expandable call processing unit.
- ALXLEP line expansion panel only.
- ALXLC 12-phone line card.
- TEC, CAT, and Select Gate telephone entry panels.
- 4G LTE cellular gate entry systems.
- Standalone keypads, receivers, and card readers.
- Generic PBX, VoIP, or telephone switching equipment not specified for the SES Alliance system.
Not Intended For
- Projects requiring more than 48 phone lines.
- Projects requiring future expansion with ALXLEP panels.
- Use as a standalone entry panel at a lobby, gate, or door.
- Replacing an ALXLC line card.
- Replacing an ALXLEP line expansion panel.
- Direct switching of high-voltage door strike, maglock, or gate motor power.
- Replacing TEC, CAT, Select Gate, or cellular entry systems without confirming the complete system architecture.
- Bypassing fire access, emergency access, ADA requirements, door release safety requirements, gate safety devices, photo eyes, or safety edges.
Features and Specifications
| Specification |
ALXCPUSLT Details |
| Brand |
Select Entry Systems / Select Engineered Systems |
| Part Number |
ALXCPUSLT |
| Store Reference |
SES-ALXCPUSLT |
| Product Family |
Alliance Voice Processor / Alliance No Phone Bill |
| Product Type |
Call Processing Unit Lite / Call Processing Module |
| Line Card Capacity |
Holds up to 4 ALXLC line cards |
| Line Cards |
ALXLC line cards sold separately unless current package confirms inclusion |
| Phone Capacity Per ALXLC Card |
Up to 12 telephones per ALXLC line card |
| Maximum Phone Capacity |
Up to 48 phone lines when 4 ALXLC cards are installed |
| Expansion Capability |
No expansion capability beyond the 4-card ALXCPUSLT configuration |
| Communication Method |
Existing inside telephone wiring; Alliance system does not require a separate outside business phone line for the entry system |
| Resident Release Function |
Resident may release entrance by dialing a programmed tone, commonly 6, when installed and programmed correctly |
| Ring Pattern |
Distinctive double-ring entrance call pattern |
| Common System Features |
Call waiting, optional music-on-hold, optional card access, optional remote programming, postal lock provision, adjustable warning tone, adjustable door release period |
| Network Connection |
RJ71C control unit connection to network |
| Power Requirement |
16V 40VA Class 2 transformer, verify current wiring diagram and package contents |
| Housing |
Wall-mounted building control unit enclosure |
| Construction |
High quality heavy gauge steel |
| Finish |
Enamel paint finish |
| Operating Temperature |
32 F to 120 F, 0 C to 50 C |
| Relative Humidity |
5 percent to 95 percent, non-condensing |
| Approximate Control / Relay Box Dimensions |
10 in W x 14 in H x 6 in D each |
| Approximate Weight Reference |
10.5 lb each for control or relay box reference; shipping weight may vary by package |
| Approvals Listed |
FCC Part 68 and Part 15 references; verify current compliance label on supplied equipment |
Also Known As / Related Part Numbers
- ALXCPUSLT
- SES-ALXCPUSLT
- Select Entry Systems ALXCPUSLT
- Select Engineered Systems ALXCPUSLT
- Alliance Voice Processor Call Processing Unit Lite
- Alliance No Phone Bill Call Processing Module Lite
- ALXLC 12-Phone Line Card - sold separately unless confirmed
- ALXCPUS Call Processing Unit - expandable version, not the same as ALXCPUSLT
- ALXLEP Line Expansion Panel - used with ALXCPUS expandable system, not an ALXCPUSLT expansion upgrade
- ALXBL6 Interface Cable - related component, verify need
- ALRJ71C Telco Interface Block - related component, verify need
Related Parts and Service Checks
- Confirm the total number of apartments, suites, offices, or phone extensions.
- Confirm that 48 phone lines is enough for the project.
- Confirm how many ALXLC line cards are required.
- Confirm the site does not need ALXCPUS expansion capability.
- Confirm the number of entrances and relay functions required.
- Confirm whether ALXBL6 interface cables and ALRJ71C interface blocks are required.
- Confirm whether the project uses a compatible SES entrance control unit.
- Confirm whether optional card access, remote programming, guard phone, music-on-hold, ADA features, or postal lock provision is required.
- Confirm transformer requirements and provide separate properly rated power for electric strikes, maglocks, or gate equipment when required.
- Inspect existing building telephone wiring before replacing the call processing unit.
Technician Note
The ALXCPUSLT is the compact Alliance call processing choice when the job is limited to 4 ALXLC line cards and up to 48 phone lines. The major ordering mistake is using ALXCPUSLT on a property that really needs the expandable ALXCPUS system. Confirm the suite count, future expansion plan, entrance count, and line-card count before ordering.
Before Ordering Checklist
- Confirm the exact part number is ALXCPUSLT or SES-ALXCPUSLT.
- Confirm the site is an SES Alliance Voice Processor no-phone-bill system.
- Confirm the 4-card, 48-phone-line capacity is enough for the job.
- Confirm the project does not require ALXCPUS and ALXLEP expansion panels.
- Confirm ALXLC line cards are ordered separately in the correct quantity.
- Confirm building telephone wiring supports the intended system layout.
- Confirm the number of controlled entrances and release functions required.
- Confirm RJ71C, interface block, cable, enclosure, transformer, and entrance panel requirements.
- Confirm whether optional card access, guard phone, postal lock, music-on-hold, remote programming, or ADA options are part of the project.
- Confirm all door release, gate operator, fire access, emergency access, and safety requirements remain compliant.
Installation and Service Notes
The ALXCPUSLT should be installed and serviced by a qualified telephone entry, access control, low-voltage, or building systems technician familiar with SES Alliance wiring. Do not connect the call processing unit directly to high-voltage lock, door operator, or gate motor circuits. Electric strikes, maglocks, door operators, and gate operators may require separate power supplies, isolation relays, code-compliant release hardware, and proper life-safety review.
For South Florida customers, Gate Openers Unlimited may be able to assist with availability and Hialeah Gardens local pickup when appropriate. For condominiums, apartments, dormitories, and commercial properties, confirm the full Alliance system design before ordering individual call processing or line card components.
Professional Advisory
Alliance Voice Processor systems involve building telephone wiring, relay outputs, entrance panels, resident phone interfaces, access control devices, and life-safety requirements. If the site has unknown telephone wiring, intermittent audio, lightning damage, failed line cards, door release problems, unsafe lock wiring, fire access concerns, or unclear system design, have the system checked by a qualified SES access control technician before replacing major components.
Product Questions & Answers
What is the Select Entry Systems ALXCPUSLT used for?
The ALXCPUSLT is the Call Processing Unit Lite for the SES Alliance Voice Processor no-phone-bill access control system. It manages communication between compatible SES entrance panels and resident telephone wiring in smaller multi-tenant buildings.
How many line cards does the ALXCPUSLT hold?
The ALXCPUSLT holds up to 4 ALXLC line cards. The ALXLC line cards are normally sold separately unless the current supplier package specifically says they are included.
How many phone lines can the ALXCPUSLT support?
Each ALXLC line card supports up to 12 telephones. With 4 ALXLC cards installed, the ALXCPUSLT can interface with up to 48 phone lines.
Can the ALXCPUSLT be expanded later?
No. The ALXCPUSLT is the Lite version and has no expansion capability beyond its 4-card configuration. Use the expandable ALXCPUS system if the property needs more than 48 phone lines or future expansion.
What is the difference between ALXCPUSLT and ALXCPUS?
ALXCPUSLT holds 4 ALXLC line cards and is not expandable. ALXCPUS includes one ALXLEP expansion panel that holds up to 8 ALXLC line cards and can be expanded with additional ALXLEP panels for larger systems.
Does the ALXCPUSLT require a separate business phone line?
The Alliance Voice Processor system is designed to use existing inside building telephone wiring without requiring a separate outside business telephone line for the entry system. The building wiring and system design still need to be verified before installation.
Can residents open the entrance from their phone?
Yes, when the Alliance system is properly installed and programmed, residents can allow entry by dialing the programmed release tone, commonly 6. Additional entrance functions may use other programmed tones depending on system setup.
Can the ALXCPUSLT replace a standard telephone entry panel?
Not by itself. The ALXCPUSLT is a central call processing unit for an Alliance system. It does not replace a standalone TEC, CAT, Select Gate, keypad, cellular call box, line card, or entrance panel without confirming the complete system design.
