Tenor BX VoIP MultiPath Switch

A more intelligent way to implement VoIP


The Quintum® Tenor® BX MultiPath Switch offers enterprises using ISDN Basic Rate Interface (BRI) lines an easy, cost-effective way to capitalize on the power of Voice over IP (VoIP). The Tenor integrates VoIP gateway functionality with its unique intelligent call routing, MultiPath architecture, and QoS support all in one solution.

Enterprises can benefit from a variety of valuable applications such as PBX extension, remote office connectivity, long distance consolidation and call centers. BX Series products can support either 2, 4 or 8 BRI lines.


• Available with 2, 4 or 8 BRI S/T ports
• Up to 16 VoIP channels
• MultiPath and Gateway configurations
• Auto-Provisionable
• Enhanced Unified Communications Proxy (UCP) supports both "Any to Any" Signaling &
• Supported by Remote Management Tools *
• Perfect for small and medium-sized enterprises with ISDN lines

* Available for an additional cost


The Tenor® BX Series include the features that made Quintum the VoIP market value leader.

  • MultiPath architecture for easy integration with existing voice and data infrastructure, meaning little or no re-programming of the PBX, or upgrades are required and no need for special dialing plans.

  • Transparent MultiPath Call Routing to intelligently route calls between the PBX, the PSTN, and the IP network to achieve the best combination of cost and quality. The Tenor can also route calls over IP to reduce costs, and then transparently "hop off" to the PSTN, to reach off-net locations.

  • PacketSaver™ Technology multiplexing to reduce bandwidth consumption by up to 57% by combining voice packets from multiple calls into a single packet.

  • Universal Dial Plan that provides a programmable dial plan for Tenor to be integrated into any network environment.

  • Auto Provisioning interface allows the Tenor solution to be deployed worldwide, and configured automatically by acquiring the configuration information from a central server, upon installation. The same auto-provisioning capability allows the Tenor to be configured from a VoIP application, thus supporting a single user interface between the VoIP application and the Tenor configuration.

  • Enhanced Unified Communications Proxy (UCP) provides 'Any to Any' Signaling & Media Switching: SIP<->SIP, SIP <-> H.323, H.323 <-> H.323, TDM<->TDM, SIP<->TDM, and H.323 <-> TDM for easy integration with any network. Operators can configure unique transport layers for IP calls (UDP or TCP).

  • NATAccess™ to allow Tenor to operate behind NAT firewalls to translate internal IP addresses into public addresses when a VoIP call is established with an outside party.

  • Remote Management for anywhere, anytime remote management even behind NAT firewalls with Quintum's Remote Management Session Server.

Tenor and Tenor S now assure that VoIP can be deployed easily in existing voice and data networks, offering unmatched voice quality and survivability, network-wide scalability, and easy, secure remote management for installation, configuration, upgrades, troubleshooting and repair. All this adds up to lower TCO than any other VoIP solution on the market!



  • Automatic call type detection: Voice/Modem/Fax
  • Trunk group support
  • Public and private dial plan support
  • User programmable dial plan support
  • Forced IP routing and IP port mapping
  • PSTN pass-through support for calls to toll-free, local, and special service numbers (emergency service, etc.)
  • Automatic appending and stripping of digits to dialed numbers
  • Call Detail Records
  • Least cost routing with external Quintum VoIP Call Routing Server *
  • Caller ID Name and Number


Telephony Specifications

  • Voice algorithms: G.723.1a, G.729ab, G.711
  • Auto codec negotiation
  • Fax Support: Group III at 2.4, 4.8, 7.2, 9.6, 14.4 Kbps, using industry standard T.38; Super G3 compatible up to 33.6 Kbps
  • Modem over IP
  • Choice of 2, 4 or 8 BRI S/T ports
  • MultiPath VoIP Switch or VoIP Gateway configurations
  • Ports individually programmable to NT or TE configuration
  • Standard RJ-45 connectors
  • Coding: A law or µ-law
  • Enhanced (Carrier Grade) echo cancellation: ITU Rec. G.168, up to 128 mSecs tail size
  • Signaling protocols: Net 3 ETSI EuroISDN (TBR3), AS/ACIF S031 (Australia), New Zealand Net3 (TNZ), QSIG
  • VoIP to circuit, and circuit to circuit (Tandem/TDM) switching

IP Network Specifications

  • LAN Interface: 1 Fast Ethernet port (10/100 Base-T)
  • Standard RJ-45 Interface (IEEE 802.3) for 10 Base-T or 100 Base-T connections
  • QoS Support: IP TOS, DiffServ Code Point

VoIP Network Specifications

  • H.323 v.3 Gateway and Integrated Gatekeeper
  • SIP User Agent (RFC3261 compliant endpoint)
  • SIP Back-to-back User Agent (B2BUA) **
  • SIP RFC2833 for DTMF signaling
  • SIP Refer Method Support
  • 'Any to Any' Signaling & Media Switching: SIP<->SIP, SIP <-> H.323, H.323 <-> H.323, H.323 <-> TDM, TDM <-> TDM, & SIP<->TDM.
  • Maximum supported IP to IP calls: 30; actual supported calls maybe lower based on system call traffic patterns.
  • IP transport (TCP or UDP) selection for outgoing IP calls.
  • IVR/RADIUS server support for AAA with integrated multilingual IVR
  • Adaptive Voice Activity Detection (VAD) with comfort noise generation (CNG)
  • Adaptive jitter buffer
  • Packet loss compensation
  • NATAccess™ - NAT/Firewall
  • Security: IP filtering
  • Up to 16 simultaneous VoIP calls
  • Support for DNS-SRV


  • Auto-Provisionable
  • Quintum Tenor Configuration Manager (GUI) for configuration of remote individual Tenors
  • Quintum Tenor Monitor (GUI) for alarm monitoring, call monitoring, and CDR monitoring
  • SNMPv2 Agent
  • Command Line Interface (CLI)


Dimensions (1U High Chassis)
• W 17 3/8" x H 1 3/4" x D 10 3/4"
• W 44.5cm x H 4.5cm x D 27.6cm
• Maximum weight: 8.25 lbs. (3.75kg)
• AC Power: 100-240 Volts AC, 50/60 Hz, 35 watts
• Operating temperature: 40° - 104° F (5° - 40° C)
• Operating humidity: 20% - 80% non-condensing
• Telco: TBR3, AS/ACIF S031
• EMC: EN55022, EN55024, EN61000-3-2, EN61000-3-3
• Safety: UL60950, EN60950, AS/NZS60950

Spec Chart

* Quintum product purchased separately.
** Not supported in initial software release.

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