Access 4000 SIP/SMDI MWI Gateway
The Microtronix Access 4000 SIP/SMDI MWI Gateway provides Message Waiting Indicator (MWI) routing and translation of messages from a Unified Message Server (UMS) and/or a Voice Message System (VMS) to one or more VoIP and/or legacy PBX systems. The MWI Gateway can act as a translator for converting the MWI output format of a messaging system to a PBX or telephone switch. It can also route the MWI output to multiple switches with different formats (SIP , SMDI, and NEC MCI).
The Access 4000 SIP/SMDI MWI Gateway has two RS232 serial interfaces, which may be expanded via external/remote TCP terminal server.
Supported MWI input notifications
- SMDI messages from Legacy VMS via serial interface or TCP/IP socket
- SIP Notify messages from VoIP UMS/VMS via TCP/IP or UDP/IP sockets
Supported MWI Output Notifications
- SMDI on serial RS232 port connected directly to legacy PBX
- SMDI on TCP/IP to remote terminal server connected to legacy PBX
- SMDI on TCP/IP to PBX supporting SMDI over TCP
- NEC MCI on serial interface to NEC PBX
- Sip Notify (message-summary) via UDP/IP to VoIP PBX
Supported MWI Translations
- SMDI to SIP
- SMDI to NEC MCI
- SIP to SMDI
MWI Routing Ccapabilities
- Lookup database consisting of Directory Number and destination PBX ID
- Self-learning and/or manually populated
- Extracts inbound MWI DN to find associated PBX destination
Software Features
- Web-based GUI for remote configuration and management (HTTP, HTTPS)
- Remote management via Simple Network Management Protocol (SNMP)
- Standard SQL database
- Configurable SIP Registrar registrations
Hardware Features
- Shelf-mount
- 1U 19" Rack-mount Kit available, PN: M4002-00-19
- 2 RS232 Serial Ports (expandable via external/remote Access Terminal Servers)
- Ethernet interface
- USB host port
- -48VDC powered from 100-240 VAC adapter, or from Central Office battery
Custom MWI Applications
Product customization and feature enhancements are available. Contact Microtronix Sales today with your custom MWI application requirements.
Protocols and Standards
- SMDI: Simplified Message Desk Interface (Bellcore TR-NWT-000283)
- NEC: NEAX 2400 IMX Message Center Interface (MCI)
- RFC 3261: Session Initiation Protocol (SIP)
- RFC 3265: Session Initiation Protocol - Specific Event Notification
- RFC 3842: A Message Summary and MWI Event Package for SIP
- RFC 3966: The tel: URI for telephone numbers
- ITU-T E.123 Notation for national and international telephone numbers
- UDP and TCP/IP
VMS to VoIP - MWI Translation
The Access 4000 SIP/SMDI MWI Gateway supports translation of legacy SMDI Message Waiting Indicator notifications from a VMS or UMS to SIP for VoIP PBX phones.
SMDI to SIP MWI Translation Message Example:
SMDI message received from Voice Mail System:
OP:MWI 5551234567!
The Directory Number (DN) is extracted and used in an outgoing SIP NOTIFY message with fields:
sip:5551234567@domainname
Messages-Waiting: yes
The SIP message is then forwarded to the SIP device.
VoIP to Legacy PBX - SIP to SMDI Translation
The Access 4000 SIP/SDMI MWI Gateway supports translation of SIP MWI notifications from a VoIP UMS to legacy SMDI for analog phones connected to a PSTN Voice Switch or PBX.
VoIP SIP NOTIFY Message Translation Example
SIP NOTIFY message received with fields:
sip:5551234567@domainname
Messages-Waiting: yes
The Directory Number (DN) is extracted and used in an outgoing SMDI message:
OP: MWI 5551234567!
MWI Message Routing Example
The Access 4000 SIP/SMDI MWI Gateway provides routing of MWI notifications from VoIP Unified Messaging Servers and/or legacy Voice Mail Systems to one or more legacy or VoIP telephone switches/PBXs. Appropriate MWI message translations are performed automatically.
For routing to multiple destination PBXs or switches, a telephone number database is used for routing MWI messages to matching destinations. The database is self-learning and may be populated from a comma separated values (CSV) text file containing telephone number and matching switch interface ID. A database manager application allows adding, deleting, and reassigning phone numbers manually.
Custom MWI Applications
Product customization and feature enhancements are available. Contact Microtronix Sales today with your custom MWI application requirements.
