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Patton 2977 DialFire

Digital Multi-Modem Cards for
Modem Pooling, FAX, or Remote Access.

The Patton Model 2977 DialFire series of Analog/ISDN Multi-Modem cards provided a full range of digital and analog connections, from low density (BRI) to high density T1 & E1 (PRI) ISDN.

The Patton 2977 was phased out. Suggested replacement products:

Diva Media Boards are compatible with NetModem Server and the latest versions of Windows, including Windows 10 and Server 2019.

While Patton is no longer updating their device drivers, PC Micro released updated modem drivers for NetModem Clients running under Windows 10/8/7/Vista/XP and Windows Server 2016/2012/2008 which allow the 2977's modems to be accessed from a remote NetModem Server on either physical or virtual machines.

2977 Features and Benifits:

  • Dynamic analog/digital/fax support. On-board DSPs provide advanced modem & fax support and maximize the efficiency of each communication channel.
  • Scalable Architecture. Field upgradable from 24 to 48 ports, or from 30 to 60 ports, supporting up to two T1/E1 lines per card. Multiple cards can be installed in one PC.
  • Advanced DSP Technology. Supports V.90, K56Flex, ISDN, and Advanced Class 2 Fax.
  • Wide OS and third-party application support. The Model 2977 DialFire RAS integrates with and take advantage of the inherent communications capabilities built-in to your current server operating environments, including: Windows Server, SCO, and Linux.
  • Universal server compliance. The Model 2977 Series operates within the PCI 2.1 specifications, support 3.3 or 5-volt PCI servers, and share common software architecture.
  • Web-Based Management. Hardware manager provides reporting and diagnostic utilities.

Designed by Digi for the most common PC Server Operating Systems, the 2977 product line meets a wide range of remote access needs, including connectivity for mobile employees, telecommuters, branch offices and SOHO (small office/home office) users. It does not require separate administrative training or a substantial investment to add remote access or fax connectivity. IT managers can continue to use the same management systems and administrative tools they know and trust. Users can continue to use the same remote access resources to which they''re accustomed.

Patton's built-in modems use the latest advances in Digital Signal Processing (DSP) technology, resulting in the industry's highest density of on-board modems for a RAS concentrator which provides low-cost connectivity to the Public Switched Telephone Network (PSTN), the Internet and your intranet, and scale to meet future growth demands.


Quality and Reliability:
The Patton Digi 2977 are backed by an optional five-year advanced-replacment warranty.
The standard manufacturer warranty is one year parts and labor, carry-in.


Modem Data Modes:
V.90, K56Flex, V.34, V.34bis, V.32bis, V.32, V.24bis, V.23, V.22bis, V.22, V.21, Bell 212a, Bell 103, TIA TSB37-A, TIA TSB38
FCC Part 15A, CE Mark, EMC Directive 89/336/EEC, Low-Voltage Directive 73/23/EEC
Fax Modes:
Group 3, V.17, V.29, V.27,V.21 Channel 2
FAX Command Set:
Group 3 FAX Class 1, Group 3 FAX Class 2, Group 3 FAX Class 2.0, Class 2.0 Error Correction, All optional 2.0 Data format conversions are supported including: Normal Image, Fine Image, 1D Image Conversion, 2D - MR Image conversion, Copy Quality Checking & Receiving Thresholds, Adaptive Answering, TSI Banner, Distinctive Ring, Caller ID, and IS-101 Voice Command Set.
ISDN Specifications:
Compression & Error Correction: V.42bis, MNP Class2, MNP Class 4, MNP Class 5, V.42 Error Correction (LAPM & MNP)
T1/E1 Specifications:
T1 Supervision Modes: Ground Start Signaling, Wink Start Signaling, Immediate Start Signaling, & Loop Start.
E1 Supervision Modes: CCS with CRC4 ITU G.704, CAS with CRC4 ITU G.704, CRCA with Remote End Block Error signaling, and R2 Signaling

Safety: USA: UL Recognized, UL 1950 - Canada: CSA Certified, CSA C22.2 No.950 - Europe: EN60950 - CE Mark - Australia: AS3260. Telecom - USA: FCC Part 68, Canada: CS03, Europe: I-CTR4 (NET 5), Australia: TSO38. Emission & Immunity - EN50082 Immunity, FCC Part 15, Subpart B
Op. Temp.: 32 - 122F (0 - 50C)

Humidity: 5 - 90% non-condensing
Air Movement:
30 CFM Forced
0-12,000 ft (0-3,660 m)
Operating System Support:
Microsoft - Windows Server 2003, 2000 Server, Windows XP, Windows NT4 - Novell - Netware4.1, Netware 4.11, & Netware 5.1 - SCO - UnixWare 7 SVR5, Open-Server 5 and - Linux
When used with NetModem, remote clients can also run under Windows Server 2008, Server 2008 R2, Windows 7, Windows 8, and Windows Vista. (including both 32-bit and 64-bit versions).

Model 2977 24, 30, 48, & 60 : 12.283L x 4.20W in. (31.199L x 10.688W cm)
Model 2977 Daughter Cards7.10L x 3.80W in. (18.034 x 9.652 cm)

Part Numbers:

2977/B4/U: 8 port RAS Card - 4 BRI ISDN - Formerly Digi Part # 77000606
2977/24/PT1: 24 Port RAS Card - Single T1 WAN - Formerly Digi Part# 77000593
2977/48/PT2: 48 Port RAS Card - Dual T1 WAN -Formerly Digi Part# 77000597
2977/30/PE1: 30 Port RAS Card- Single E1 WAN -Formerly Digi Part# 77000599
2977/60/PE2: 60 Port RAS Card - Dual E1 WAN - Formerly Digi Part # 77000603
2977/24/PTM: 24 Port Daughterboard upgrades 24 Port RAS to 48 Ports - Formerly Digi # 77000594
2977/30/PEM: 30 Port Daughterboard Upgrades 30 Port RAS to 60 Ports - Formerly Digi # 77000600


Part # Description MSRP (USD)
2977/B4/U 8 port (4 BRI ISDN PORTS) RAS Card U I/F (NORTH AMERICA) $1,720.00
2977/24/PT1 24 PORT Single T1/PRI ISDN RAS Card $4,389.00
2977/24/PTM 24 PORT T1 Daughterboard. Upgrade 24 PORT Card to 48 PORT $2,569.00
2977/30/PE1 30 PORT Single E1/PRI ISDN RAS Card $4,598.00
2977/30/PEM 30 PORT E1 Daughterboard. Upgrade 30 PORT Card to 60 PORT $2,828.00
2977/48/PT2 48 PORT Dual T1/PRI ISDN RAS Card $6,090.00
2977/60/PE2 60 PORT Dual E1/PRI ISDN RAS Card $6,748.00

More information:

Product data sheets, manuals, and software upgrades can be found in the Download area.

For additional information, please contact our sales department:
Phone:   +1-805-493-8388 7am-5pm PST.
Toll-Free: 1-800-922-0005 7am-5pm PST.
Email: Sales@pcmicro.com.


   DialFire and Patton are trademarks of Patton Electronics Co.
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