MiVoice Border Gateway

Teleworker Service

To deploy Teleworker service you must:

• Install MiCollab in Network Edge mode or
• Install MiCollab in LAN mode and install a separate MBG server in the Demilitarized Zone (DMZ) to support the teleworker services

The Teleworker service connects remote MiCollab clients and softphones to the corporate voice network providing full access to voice mail, collaboration tools, and all the other features of the office phone system. When configured for teleworker use, the remote SIP end-point has the following capabilities:

• A SIP Teleworker phone is a SIP-based remote extension of the MX-ONE
• Encryption to provide a secure voice path between the phone and the system across the Internet
• Adaptive jitter buffering and other software enhancements to improve voice quality over Internet
• G.729 compression to reduce bandwidth requirements
• Operates in the same manner as any other phone connected to the network
• Operates over any broadband LAN connection that provides connectivity back to the corporate office where the MiCollab is located
• Directly accesses the corporate office systems (for example, voice mail and collaboration tools)
• Support for the SIP protocol for the MiCollab desktop and Mobile SIP softphones
• MiVoice Border Gateway scales teleworker functionality for large enterprise.

Web Proxy Service

An MBG server with web proxy installed in the Demilitarized Zone (DMZ) protects the MiCollab server in the LAN from Internet exposure. In a DMZ configuration, the firewall is the gateway for all IP traffic with the internet. The Web Proxy blade acts as a reverse proxy providing a secure method for remote web browser users, such as web conferencing users, to connect with a MiCollab server located on the corporate LAN. It also provides internet-based clients (for example MiCollab clients, not softphone) with access to a MiCollab system located on the LAN. Remote web browser users and clients connect to MiCollab in the LAN through the Web Proxy blade that is installed on a separate MBG server in the DMZ. The Web Proxy also restricts access to only those URLs that belong to the end-user web interfaces for these applications.

Remote SIP Phone

The MBG supports remote access from Mitel 6900/6800 SIP phones.

SIP Trunk Service

The MBG application on the MiCollab server supports SIP trunk proxy service. You can use SIP trunks provided by an Internet Telephony Service Provider to connect your MX-ONE platform to the traditional PSTN network. Three components are required to successfully deploy SIP trunks:

• Mitel MX-ONE communications platform with SIP-enabled trunk side
• Internet telephony or SIP Trunking service provider
• MiCollab with MBG SIP Trunk proxy service to connect the service provider to the ICP on the LAN. The MBG SIP Trunk Proxy service on MiCollab also serves as a SIP-aware firewall and eliminates the need for 3rd party firewalls, simplifying configuration and deployment.

A "SIP trunk" in the context of the MBG blade is simply a pair of endpoints, defined by their IP addresses and signaling ports. One of the endpoints is usually your ICP, and the other is your SIP provider's firewall or SBC. A trunk can have any number of "channels," each of which corresponds to an active media stream. A channel license is required for each active channel, so you will need enough channel licenses to cover the maximum number of active calls. As an analogy, a North American ISDN PRI link contains 23 B channels for audio and one D channel for signaling and can carry a maximum of 23 simultaneous calls. This would be equivalent to a SIP trunk with 23 channel licenses. For SIP Trunking support, you require one SIP Trunking Channel license for each of the maximum number of simultaneous calls you estimate to make. No extra licenses are required for SIP device support.

Secure Recording Connector (SRC)

Via the recording connector a centralized recording system, such as the MiVoice Call Recorder, can be configured to receive RTP/SRTP audio streams from defined SIP end-points through the MBG.