-3 or 5 ISDN BRI S0 ports,
-4 or 8 low-bandwidth voice or T.38 fax calls.
--Two 10/100 Ethernet ports
-Access router w/ NAT, Firewall, PPPoE, DHCP, DynDNS & VPN with IPSec*
-SIPv2, H.323v4, MGCP/IUA, -ISDN, DSS1, QSIG,
-T.38, fax and modem bypass, DTMF relay.