Hardware Description and Reference for Avaya ... - Avaya Support

Note:
Note: The media gateway achieves this number of ports by staggering the ringing and
pauses between two sets of up to four ports.
If it has more than four ports, the MM711 also supports:
● Type 1 caller ID and Type 2 caller ID
● Ring voltage generation for a variety of international frequencies and cadences
A hard-wired ground wire is added for each IROB-to-earth ground
External interfaces on the CO trunk side
Caller ID
The following requirements apply to the external interfaces on the CO trunk side:
● The tip and ring default input impedance is 600 ohms. The default impedance can be
configured to accommodate other tip and ring impedances. One such impedance is the
900 ohms that is used in Brazil. Another is the complex impedance that is used in the
European Union.
● A hard-wired ground wire is added for each IROB-to-earth ground.
● The MM711 supports DTMF, MF, and pulsing.
● The MM711 supports R2MFC address signaling, and provides -48 VDC for ports that are
set up as direct inward dialing (DID).
● Acceptable loop range for the CO trunk is 18 to 60 mA
● The MM711 supports direct inward and outward dialing (DIOD) for Japan.
The following trunk types are supported:
● Loop-start and ground-start CO trunks
● DID
● CAMA
The MM711 Analog Media Module supports incoming caller ID (ICLID) on analog CO loop-start
trunks for all supported countries that require this feature. The MM711 supports Type 1 caller ID
(CID) devices, and firmware signaling requirements are implemented on a per-port basis. The
firmware supports these formats:
● Single Data Message Format (SDMF)
● Multiple Data Message Format (MDMF)
● Caller ID generation on line ports
The MM711 accommodates on-hook transmission, which is necessary to receive caller ID
signals.
290 Hardware Description and Reference for Avaya Communication Manager