User`s guide

26 Dialogic
®
1000 and 2000 Media Gateway Series User’s Guide
Overview
The DMG2000 is available in the following models:
• DMG2030DTIQ - Supports phone emulation mode for a single T1 or E1 interface.
• DMG2060DTIQ - Supports phone emulation mode for two T1 or E1 interfaces.
• DMG2120DTIQ - Supports phone emulation mode for four T1 or E1 interfaces.
• DMG2060DTISQ - Supports phone emulation mode with survivability for two T1 or E1
interfaces.
• DMG2060DTISQV34 - Supports phone emulation mode with survivability for two T1 or E1
interfaces.
• DMG2120DTISQ - Supports phone emulation mode with survivability for four T1 or E1
interfaces.
Note: The Item Market Name on the Media Gateway may vary slightly, depending on the version.
Depending on the model, the Media Gateway can be configured for the following operating mode:
• Phone Emulating
1.1.1 Phone Emulating
In the Phone Emulating mode, the Media Gateway operates as a telephony gateway appliance that
emulates the following for transporting PBX functionality over a packet-switched network:
• up to eight station sets (DMG1000 models)
• up to 24 station sets (single T1 DMG2000 model)
• up to 48 station sets (dual T1 DMG2000 model)
• up to 96 station sets (quad T1 DMG2000 model)
• up to 30 station sets (single E1 DMG2000 model)
• up to 60 station sets (dual E1 DMG2000 model)
• up to 120 station sets (quad E1 DMG2000 model)
The Media Gateway translates protocols for call setup and release between the IP network and the
PBX or PSTN, and converts the media formats between the two networks.
Figure 1 shows how the Media Gateway provides a gateway between voice over IP (VoIP) devices
(SIP) on a LAN and the PBX. By emulating station sets to the proprietary PBX, the Media
Gateway provides full call party information to the IP network.
The DMG2000 or the analog version (DMG1008LSW, DMG1004LSW) of the DMG1000 can also
connect directly to the PSTN, as shown in Figure 2.