DPA 7610/7630 Voice Mail Gateway
Another component of an AVVID solution is the DPA 7610/7630 Voice Mail
Gateway.The Digital PBX Adapter (DPA) 7610 and 7630 are VoIP gateways that
allow legacy voice mail systems to communicate with a Cisco CallManager.The
DPA 7610 and 7630 have a 10/100 Ethernet port and one or three RJ-21 ports,
respectively.The DPA uses the RJ-21 ports, which provide 8 to 24 four-wire digital
lines to interface with the legacy voice mail system. It communicates with the
CallManager through the Skinny Station protocol via the 10/100 Ethernet port,
and emulates an IP phone in order to communicate with the CallManager.The
DPA then allows simultaneous communication with a CallManager and legacy
PBX to the voice mail system (as illustrated in Figure 3.4).