About the Vanguard 3400 Series 1-9
Applications
Figure 1-4. Hosted, SIP-based IP Telephony Application for Small/
Medium Branch Offices
WAN
(IP/MPLS)
PSTN
FaxLaptop
Main Office
Small/Medium Branch Office
6800 Series
PRI
FXO
3460/3480 ASG
Soft Switch
Analog
Phone
IP Telephone
