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Dialogic® Diva® UM-Analog

Diva Analog Board

These are high end Analog Media Boards. The boards are well suited for IVR systems, fax servers and unified messaging servers for SME customers. The UM-version support fax on only half of the channels.

The Dialogic® Diva® UM-Analog Media Boards provide two, four, and eight ports and serve as an excellent communication platform, which scales from 2 to 64 channels (phone lines) per single server.

The Diva UM-Analog Media Boards offer voice, speech, conferencing, VoIP, modem and fax features, and can serve as a base for many communication applications. The boards are supported by most standard applications, and are also suitable for new application development. Diva UM-Analog Media Boards are available in Low Profile, Half Size, or Full Size form factors and are available in both PCI and PCI Express (PCIe) versions. Diva UM-Analog can be seamlessly combined with other Dialogic® Diva® Media Boards, such as E1/T1, ISDN PRI/BRI, and VoIP.

Because both PCI and PCIe versions share the same feature sets, migration from a PCI server hardware to PCI Express server is easy. PCI and PCIe versions can also be used in the same server.

The Diva UM-Analog Media Boards support the same set of programming interfaces as other Diva® Media Boards: the three Dialogic® Diva® APIs, CAPI 2.0, COM port, WMP - WAN Miniport, TTY, Asterisk, and SIP/RTP. Because of consistent interface support, applications written for one Diva Media Board will normally work without modification with Diva UM-Analog Media Boards. 

The Diva UM-Analog-2, UM-Analog-4, and UM-Analog-8 Media Boards support fax transmissions on half (50%) of their available channels. The feature set of the Diva Media Boards in the UM series has been designed to meet the needs of typical Unified Messaging applications. 

Product Highlights
Onboard CPU with large RAM and powerful FPGA chip for fast data streaming between the host CPU, the DSPs, the phone line and the other active components onboard Can remove performance bottlenecks by offloading key realtime tasks that would ordinarily place an excessive burden on the host server, allowing Quality of Service (for example, voice quality and connection speed) to be more consistent
One powerful DSP dedicated to each communications channel Provides real-time processing of complex operations (such as V.90 data modem, V.34 fax receiver and transmitter, voice compression, or echo cancellation) without reducing overall system performance, which lowers implementation costs
Sophisticated hardware design Operates with low power consumption
Conforms to plug-and-play standards Easy installation and operation
Implements most supplementary services and many different analog signaling protocols Allows application compatibility with major PBXs and can make a system based Dialogic® Diva® technology ready for worldwide use
Pulse and tone dialing Handles enterprise voice, conferencing, fax, and remote access applications via any PBX offering analog trunk interfaces
Voice packetization into Real-time Transport Protocol (RTP), adaptive jitter buffer, voice compression (G.726, GSM), and Comfort Noise Generation (CNG) Permits legacy voice, speech, and conferencing applications to be used with VoIP clients and IP phones
Supports the same programming interfaces as other Dialogic® Diva® Media Boards: CAPI 2.0, COM port, TTY, Dialogic® Diva® APIs and others Reduces porting efforts and time to market by making Diva Media Boards compatible with standard telephony and communications applications
Up to eight Diva Media Boards of the same or different types can operate concurrently in a single server

Easy scalability and flexibility to address an organization’s communications needs in changing environments, such as VoIP

Windows Support Tightly integrated with Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows Server 2012, and Windows Server 2012 R2.
Linux Support Dialogic tests and supports a wide variety of distributions and kernels. This includes SUSE, Red Hat, Debian, Fedora versions as well as other known distributions (OpenSuse, Slackware, Mandrake, Gentoo, Ubuntu). 32bit and 64bit systems are supported.
Dialogic® Diva® System Release 9.5LIN - Technical Specification
Supported Dialogic® Diva® Media Boards

Dialogic Diva BRI adapters:

Diva UM-BRI-2 PCI and PCIe
Diva UM-4BRI-8 PCI and PCIe

Diva BRI-2 PCI and PCIe
Diva 4BRI-8 PCI and PCIe

Dialogic Diva Analog adapters
Diva UM-Analog-2 PCI and PCIe
Diva UM-Analog-4 PCI and PCIe
Diva UM-Analog-8 PCI and PCIe

Diva Analog-2 PCI and PCIe
Diva Analog-4 PCI and PCIe
Diva Analog-8 PCI and PCIe

Dialogic Diva PRI/E1/T1 adapters (Version 3.0):
Diva PRI/E1/T1-CTI PCI and PCIe
Diva V-PRI/T1-24 PCIe
Diva V-PRI/E1-30 PCIe 
Diva UM-PRI/T1-24 PCI and PCIe
Diva UM-PRI/E1-30 PCI and PCIe
Diva PRI/T1-24 PCI and PCIe
Diva PRI/E1-30 PCI and PCIe

Dialogic Diva V-xPRI Series adapters:
Diva V-1PRI/E1/T1-30 PCIe (Half Size)
Diva V-2PRI/E1/T1-60 PCIe (Half Size)
Diva V-4PRI/E1/T1-120 PCIe (Half Size)
Diva V-4PRI/E1/T1-120 PCIe FS (Full Size)
Diva V-8PRI/E1/T1-240 PCIe FS (Full Size)
Diva V-2PRI/T1-48 PCI (Full Size)
Diva V-2PRI/E1-60 PCI (Full Size)
Diva V-4PRI/T1-96 PCI (Full Size)
Diva V-4PRI/E1-120 PCI (Full Size)

Dialogic Blue Telephony Boards:
Dialogic Blue OneSpan-24/30-S-LP PCIe
Dialogic Blue OneSpan-24/30-H-HL PCIe
Dialogic Blue TwoSpan-48/60-H-HL PCIe
Dialogic Blue FourSpan-96/120-H-HL PCIe
Dialogic Blue EightSpan-192/240-H-HL PCIe

Application Interfaces
  • CAPI 2.0: For a wide range of CAPI-based ISDN applications
  • TTY (modem emulation): For applications that communicate via the AT-command set
  • Management Interface: For access to call state/ status/ statistics and line or interface events
Supported connection types
  • Transparent: Enables voice connections
  • Analog Connections: enables the support traditional modems as remote access clients1,2   
  • Fax connections: Class 12 , Class 22 and CAPI
  • HDLC: for fast PPP over ISDN
  • X.75: HDLC with layer 2 error correction
  • V.110: enables the support GSM mobile phone connections12
  • V.120: Enables connections to certain terminal adapters
  • PIAFS: Enables mobile data connection with 32 and 64 kbps2,3 
  • X.25 / X.31: Enables packet-oriented connections via B-channel and D-channel
Supported switch types (D-channel protocol)
  • ETSI-DSS1 (Euro ISDN)
  • NET 3 (Belgium)
  • VN3 (France)
  • VN4/6 (France)
  • 1TR6 (Germany)
  • INS-64 (Japan) 
  • INS-1500 (Japan)4
  • 4ESS (North America - AT&T)4
  • 5ESS Custom (North America - AT&T)
  • National ISDN (NI1 - North America)
  • T1 - Robbed Bit Signaling4
  • Channelized E14
  • E1/R2 (China 1)4
  • E1/R2 (India)4
  • E1/R2 (Korea)4
  • Pulse detection for R2 protocols4
  • Q-Sig support for most PBX
General Features
  • Support for ISDN basic-rate interface (BRI), ISDN primary-rate interface (PRI) and T1
  • Support for ISDN lines with a transfer rate of 64 kbps or 56 kbps (e.g. USA)
  • Support for channelized T1 (Robbed Bit Signaling) lines with a transfer rate of 56 kbps
  • Support for Channelized E1
  • Support for fractional lines
  • Support for NT (Network Termination) mode for all Version 2.0 boards and all PRI boards1, incl. TEI assignment/ point to multipoint
  • Automatic detection of Dilaogic Diva media boards
  • Automatic protocol detection for incoming calls
  • Automatic synchronous/asynchronous conversion
  • Number configuration (including Direct Dial In) for all drivers
  • B-channel and D-channel data trace (TR/RX) capability through management interface
  • Includes Dialogic Diva Configuration Manager for easy configuration
  • Dialogic Diva Web Configurator for Remote configuration and management
Modem Emulation
  • TTY driver: with support for V.120, V.1101, 2, X.25, X.75 data modem, analog modem1 and fax class 12 / class 22  and PIAFS 
  • Generic Server modem
  • V.42bis data compression
  • V.42 error correction2
  • Analog modem support12
    • V.18 standard for text telephone systems  
    • Bell 103 (300 bps) modem emulation
    • Bell 212 (1200 bps) modem emulation 
    • V.21 (300 bps) modem emulation
    • V.23C (1200/75 bps) modem emulation
    • V.22 (1200 bps) modem emulation
    • V.22bis (2400 bps) modem emulation
    • V.32 (9600 bps) modem emulation
    • V.32bis (14.4 kpbs) modem emulation
    • V.34 (33.6 kbps) modem emulation
    • V.90 (56 kbps) modem emulation5
Fax and Voice features
  • Fax Group 32 and 4 support
  • Fax modem emulation2 V.34 (33.6 kbps), V.17 (14.4kbps), V.29, V.29ter
  • Fax class 1 and 2 support2
  • Error correction mode (ECM)2
  • Fax compression (MH, MR 2Dcoding, MMR T.6 coding)2
  • Fax tone detection2
  • Reversal of fax direction2
  • Fax polling2
  • Fax on demand2
  • Standard, fine, super-fine and ultra-fine resolution2 
  • Color Fax on CAPI (JPEG)2 
  • Fax paper formats: ISO A4, ISO B4, and ISO A326
  • DTMF transmission and detection
  • Generic Tone Detection and Generation1, 2
  • Cross board switching and conferencing via line interconnect1, 36
  • Automatic Gain Control (AGC)1, 2
  • Echo cancellation1, 26
  • Real time protocol1, 26
  • Comfort noise generation (CNG)1, 26
  • Voice activity detection (VAD)1, 26
  • Dynamic anti-jitter buffer1, 26
  • Voice compression (GSM, G.726)1, 26
  • DTMF Clamping and Filtering
  • DTMF Collection (Post Dial Digits)
  • Pitch Control
Leased Line support
  • Support for Leasaed lines (LAN-to-LAN connections)
  • Structured and unstructured
  • 64/ 128 kbps transfer rate on BRI lines
  • 1.5 Mbps transfer rate on T1 lines
  • 2.0 Mbps tranfer rate on E1/ PRI lines
Supplementary Features via CAPI


  • Number identification services (CLIP, CLIR, COLP, COLR, KEY, MSN, DDI, SUB)
  • Call offering services (TP, CFU, CFB, CFNR)7
  • Call completion services (CW, HOLD, ECT)7
Q-Sig Features
  • Basic Call
  • Number identification services (CLIP, CLIR, COLP, COLR, KEY, MSN, DDI, SUB)
  • ECT (Explicit call transfer)
  • HOLD
  • Redirected Number
  • Connected Name
  • Advice of charge (AoC)
Channelized T1 (Robbed Bit Signaling) Features
  • Trunk types: loop, ground and wink start
  • Tone Dialing (DTMF & MF)
  • Pulse Dialing
  • Ringer- and busy tone generation/ detection
  • Up to 56 kpbs transfer rate
PIAFS versions


  • PIAFS 1.0 - 32k Fixed Speed
  • PIAFS 2.0 - 64k Fixed Speed
  • PIAFS 2.1 - Best Effort (variable speed)
Codecs and Transcoding


Data Sheet

  • The Dialogic® Diva® Analog Media Boards for applications connected to analog lines provide a 2-port, 4-port, and 8-port communications platform that offers advanced telephony support, high-performance media processing capacity, and VoIP support.

Application Notes

White Paper

Use the Purchase page linked below to find partners to purchase Dialogic products. The order codes below are for your reference when making a purchase.

Where to Buy

ProductOrder CodeDescription
Diva UM-Analog-2 (with additional LP bracket)306-3852-port Analog, 1 Channel fax (V.34), Loop-Start, PCIU
Diva UM-Analog-2 PCIe (with additional LP bracket)306-3872-port Analog, 1 Channel fax (V.34), Loop-Start, PCIe
Diva UM-Analog-4306-3844-port Analog, 2 Channels fax (V.34), Loop-Start, PCIU
Diva UM-Analog-4 PCIe306-3884-port Analog, 2 Channels fax (V.34), Loop-Start, PCIe
Diva UM-Analog-8306-3838-port Analog, 4 Channels fax (V.34), Loop-Start, PCIU
Diva UM-Analog-8 PCIe306-3908-port Analog, 4 Channels fax (V.34), Loop-Start, PCIe