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Chapter 5 Device Network Settings
Vantage CNM User’s Guide
98
Primary/ Secondary 
Phone Number
Type the first (primary) phone number from the ISP for this remote node. If the 
primary phone number is busy or does not answer, your device dials the 
secondary phone number if available. Some areas require dialing the pound 
sign # before the phone number for local calls. Include a # symbol at the 
beginning of the phone numbers as required.
AT Command Initial 
String
Type the AT command string to initialize the WAN device. Consult the manual 
of your WAN device connected to your dial backup port for specific AT 
commands.
Advanced Modem 
Setup
Click the Edit button to display the Advanced Modem Setup screen and edit 
the details of your dial backup setup.
TCP/IP Options
Enable SUA
Network Address Translation (NAT) allows the translation of an Internet 
protocol address used within one network to a different IP address known 
within another network. 
SUA (Single User Account) is a subset of NAT that supports two types of 
mapping: Many-to-One and Server. When you select this option the device will 
use Address Mapping Set 255 in the SMT.
Enable RIP
Select this check box to turn on RIP (Routing Information Protocol), which 
allows a router to exchange routing information with other routers. 
RIP Direction
RIP (Routing Information Protocol) allows a router to exchange routing 
information with other routers. The RIP Direction field controls the sending 
and receiving of RIP packets. 
Choose Both, In Only or Out Only.
When set to Both or Out Only, the device will broadcast its routing table 
periodically. 
When set to Both or In Only, the device will incorporate RIP information that it 
receives. 
RIP Version
The RIP Version field controls the format and the broadcasting method of the 
RIP packets that the device sends (it recognizes both formats when receiving). 
Choose RIP-1RIP-2B or RIP-2M.
RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is 
probably adequate for most networks, unless you have an unusual network 
topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the 
difference being that RIP-2B uses subnet broadcasting while RIP-2M uses 
multicasting. Multicasting can reduce the load on non-router machines since 
they generally do not listen to the RIP multicast address and so will not receive 
the RIP packets. However, if one router uses multicasting, then all routers on 
your network must use multicasting, also.
Enable Multicast 
Version
Select this check box to turn on IGMP (Internet Group Multicast Protocol). 
IGMP is a network-layer protocol used to establish membership in a Multicast 
group - it is not used to carry user data. 
Multicast Version
Select IGMP-v1 or IGMP-v2. IGMP version 2 (RFC 2236) is an improvement 
over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would 
like to read more detailed information about inter operability between IGMP 
version 2 and version 1, please see sections 4 and 5 of RFC 2236
PPP Options
PPP Encapsulation
Select CISCO PPP from the drop-down list box if your backup WAN device 
uses Cisco PPP encapsulation; otherwise select Standard PPP.
Enable Compression
Select this check box to enable stac compression. 
Connection 
Table 29   Device Operation > Device Configuration > Network > WAN Backup > Advanced 
(Prestige) (continued)
LABEL
DESCRIPTION