Main specifications product description cisco 887 vdsl adsl annex m over pots multi mode router router dsl modem desktop device type router dsl modem 4 port switch integrated enclosure type desktop digital signaling protocol adsl2 adsl2 vdsl2 data link protocol ethernet fast ethernet capacity ipsec vpn tunnels20 network transport protocol l2tp dhcp routing protocol rip 1 rip 2 hsrp vrrp gre policy based routing pbr remote management protocol