Higgins International

Product Info. Online Manual Polnet ACP 2.0 Manual
Download Manual: PDF Manual Download Manual for Polnet 2.0
Programming Guide: Programming Guide Download Programming Guide

Print Polnet Brochure (PDF)

ATTN: Facility and Property Managers (PDF)

Out-of-Band Network Switch

ACP-300 Out-of-Band Network Switch & Call Router –  3 telephony devices share 1 phone line

The ACP-300 is an industrial grade Out-of-Band Network Switch, Dial-up Gateway, and telephone line sharing device….three solutions in one for remote network support.

  • Eliminates costly dedicated phone lines for fast R.O.I.
  • Secures dial-up modems from unauthorized access
  • Automatically directs calls to phone, fax, modems
  • Streamlines polling and data acquisition
  • Provides barge-in capability for priority outbound calls

The Polnet ACP-300 is a three device industrial grade automatic call processor designed to eliminate dedicated phone lines by expanding the number of devices to three that you can connect to a single line.

The Polnet ACP-300 automatically answers the line and determines where each call should be routed. "Data Polling" calls that produce the proper security access code (DTMF tones) get routed to the assigned modem or device for each code. The ACP-300 also detects CNG tones for automatic routing to fax equipment. If no tones are detected, the Polnet ACP routes calls to a phone or phone system.

Programmable security access codes for each device port lets the Polnet ACP keep your information safe from unwanted callers or hackers.

Use the Polnet ACP-300 with Any type of modem - regardless of speed, throughput or standard, and type of data terminal - credit card authorization machines, money order terminals, Underground Storage Tank monitoring systems, alarm/energy control systems, storage and monitor systems, and more!

This 3 device Modem Sharing Device has special polling features and interfaces with an rj-31x jack used for larger phone systems. Able to poll multiple devices (modems) in a single call. Typically used in multiple location (store) applications.

Why pay for dedicated data lines? Use the ACP-300 instead!

The New Features include...

Programmable Security Access Codes, up to 7 digits per port, protects connected devices from unauthorized access for a robust telephony firewall.

Caller ID “Store & Forward”
CID is sent to device on first ring.

Multiple Line Seizure Ports
Up to four device ports can now be designated for emergency line seizure for critical applications.

Simplified Installation
All line‐in and device jacks are RJ11. No additional connectors are required

LED Status Display
Seven segment display shows port in use & programming value read‐back. Audible read‐back tones are also provided for remote programming.

Data Disruption Protection
Prevents active calls from interruption by another device.

Remote Programming
ACP’s can be securely programmed by a remote administrator.


Credit Card Authorization Machines
Money Order Terminals
Cash Register Polling
Storage Tank Monitoring Systems
Out‐of‐Band Network Access
Telephony Firewall
Utility Meter Reading
Remote Site Management
HVAC Control Monitoring
Substation Communications
Point‐of‐Sale System Integration
Modem Polling
Fuel Tank Monitoring
Service Port Access
SCADA Interrogation
1st Line Network Support
ATM Machines

2 Year Warranty
100-240 VAC, 50-60 Hz.
12-15 VDC at Power Jack
2.5 Watts Idle
4 Watts Ringing
REN 1.1B
230V Version Available

Purchase Now!

ACP-300 (Three Devices)  
Your Price only Delivered*
ACP-500 (Five Devices)  
Your Price only Delivered*
ACP-900 (Nine Devices)
Your Price only Delivered*


1 Polnet ACP
1 Power Supply
1 7ft. Line Cord
Wall Jack Mounting Hardware
Installation Manual


Interested in purchasing the Polnet?
Questions about the Polnet ACP series?
Email info@faxswitch.com or
Call (217) 337 - 0965
Toll Free (866) 337-0965

Polnet ACP 2.0
OutofBand Network Switch & Call Router

Reduce phone line costs, improve connectivity, and secure your telecom and network equipment with Multi-Link’s ACP-300 Out-of-Band Network Switch & Call Router (part of the new ACP Series 2.0).

Protecting access to information systems is becoming more critical in commercial and industrial applications, as are reliable, secure, and redundant communication paths. The ACP-300 provides these capabilities, while providing cost savings through phone line consolidation (line-sharing).

ACP Basic Installation (ACP-300 shown)

Call Routing

The ACP automatically routes calls to phones, faxes, and dial-up modems, ensuring that the right resource is reached the first time. This consistent connectivity prevents time consuming dial-backs and streamlines polling and data acquisition processes such as SCADA, POS access, Substation/Revenue meter reading, Tank level monitoring, M2M communication, Sub-Metering, and HVAC/Lighting control, etc.

Multiple devices can share a single telephone line, eliminating costly phone lines and saving up to $50/month for each line eliminated. Businesses with multiple remote sites can realize a significant ROI in 3 months or less.

Multi-Link ACP-300 Example Application

Out of Band Access

The majority of Multi-Link’s phone/data line-sharing switches are being installed for out-of-band dial-up modem access to communication and data networks. When the network is down and normal in-band access is denied, how do you recover the network equipment? Remote out-of-band  access to management ports provides an efficient back door method for recovery.

This can be through the use of a backup dial-up modem via the Public Switched Telephone Network (PSTN). Installed on an existing POTS line, the ACP provides an inexpensive, secure and controlled “out of band” path for accessing service ports to network equipment. Why pay a monthly cost for a line that you never want to use?

Out of Band Access

Dial-up Modem Gateway

Protecting access to IT systems and networks is becoming more critical in commercial and industrial applications.The ACP is engineered to provide an additional layer of security to connected devices. Vulnerable pathways to equipment via the PSTN are protected by programmable Security Access Codes up to seven characters.

There are over 35 million combinations to choose from, effectively creating a telephony firewall for dial-up connections. Service vendors that need to monitor their on-site equipment can now have remote access that is completely isolated from the IT network. This is most advantageous for service vendors working with Federal government agencies and businesses with strict IT security policies.

How does the ACP work?

The ACP is a call processor with an advanced feature set designed to route calls on an analog/simulated analog telephone line. Upon ring detection, the ACP will capture CID Data and answer the incoming call. After answering, the ACP immediately scans for a CNG (fax) tone or DTMF security access code (SAC). During this processing period, a Bell spec “ring-back” tone is provided to the calling party.

If a security access code (SAC) is detected, the call is routed to the corresponding device port. If a CNG (fax) tone is detected, the call is routed to the designated fax port (Device 2 port). In the absence of a CNG tone or security access code, the call is defaulted to the device 1 port. The original CID Data will be retransmitted after the first ring to any device port.

All device ports have access to telephone line and outbound requests are performed in a standard fashion. Any device that tries to access the telephone line when the telephone line is in use will hear a busy signal.

The emergency barge-in (EBI) feature allows the specified device port/ports to seize the telephone line and take priority in the event of a critical outbound call. This feature can be programmed ON/OFF (OFF by default) for devices 1 through 4 for the ACP-500 & ACP-900 units (1 through 3 for the ACP-300).

Regarding the Emergency Barge-In Feature of the ACP Series 2.0:

Please note that the Emergency Barge-In operation of the ACP Series 2.0 may not be optimal for achieving line seizure when used on the PRIMARY connection in applications involving emergency security equipment, e.g. fire, medical, police, first responder, or critical monitoring notification. Always validate approved connections with the appropriate local jurisdiction/ordinances and the Insurer of the business/property.

If you choose to utilize the ACP Series 2.0 on a primary connection, it is highly recommended that all equipment involved is thoroughly tested and in compliance prior to final activation.

Questions? Call us at 866-337-0965 for further information.


Security   Multi-Port Polling
Save Money   Line Sharing
Increased Connectivity   3, 5, and 9 Port Models
Auto Fax Detect   Remote Diagnostics
Dual Surge Protection   Fully Programmable
Barge-In Protection   Call Grab
DSL Compatible   Bell Spec Ring‐Back Tones
No Software to Install   Mounting Bracket Included
2 Year Warranty   Free Phone Tech Support

Multi Link Polnet ACP-300

ACP-300 (Three Devices)  
Your Price only Delivered*

Call toll free (866) 337-0965 with your questions or to order by phone.


Comments: info@faxswitch.com