AirLink Communications Raven X HSDPA Guía de usuario Pagina 31
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Raven X HSDPA for Cingular - User Guide, version 2.33 26
Data Communication and Host Modes
Keepalive
Keepalive is used to test the Raven X’s connection by pinging an IP address after a specified period
of inactivity. Keepalive is only recommended for users who have a remote terminated modem that
infrequently communicates to the network or if you have experienced issues over time where the
modem can no longer be reached remotely.
When Keepalive pings the IP address, an acknowledgement indicates there is an active connection
to the network. If the Raven X does not receive a response from the IP address, it will make addi
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tional attempts according to a backoff algorithm before determining the Internet connection is not
functioning properly. If it determines the connection is not fucntioning, the modem will then
attempt to reconnect to Cingular to reestablish IP connectivity.
Configuring Keepalive
You can use Wireless Ace or a terminal connection to configure Keepalive (page 34). In Wireless
Ace, select Other from the groups menu on the left.
FIGURE 7. Wireless Ace: Keepalive Configuration
*IPPING sets the interval, in minutes, you want Keepalive to test the network connection. To
disable Keepalive, set *IPPING to 0 (default setting).
The AirLink Modem as a Gateway
The primary purpose of the Raven X is to forward data from a single device connected to one of
the ports to the Cingular’s network and, ultimately, under most circumstances, to the Internet in a
one to one gateway configuration.
When the Raven X obtains its IP Address from the cellular provider, it also obtains Cingular’s
routing information necessary to forward messages to Cingular’s routers which can then forward
on from there. The Raven X then acts as a router for the device connected to it, forwarding to or
from Cingular’s network.
Caution: The Raven X forwards messages to and from the cellular network for
only ONE device per port. The Raven X is a one-to-one gateway and does not
have advanced routing features required to do one-to-many routing.
- Raven X HSDPA 1
- Important Notice 2
- Safety and Hazards 2
- Limitation of Liability 2
- Warranty Summary 2
- Contents 3
- HSDPA Overview 6
- Internet 7
- Common Uses for the Raven X 8
- Introduction to Raven X HSDPA 9
- Activation of the Raven X 10
- Replace the SIM slot cover 12
- Utilities for the Raven X 15
- Wireless Ace 16
- Modem Doctor 18
- IP Manager and DNS 19
- Fully Qualified Domain Name 20
- Dynamic Names 21
- Configuring DNS 23
- PPP-Peer 23
- FIGURE 1. Wireless Ace: MD 26
- PassThru Mode 27
- FIGURE 3. Wireless Ace: MD 28
- Public and Private Mode 29
- Internal DHCP Server 30
- Keepalive 31
- Data usage using Keepalive 32
- Hardware Installation 33
- Raven X Indicator Lights 34
- Modem Placement 36
- AT Commands 39
- Direct Serial Connection 42
- AT Command Listing 45
- Information and Status 46
- FIGURE 2. Status Group 47
- AT Commands: 50
- Misc (Miscellaneous) 50
- AT Commands: Serial 53
- AT Commands: TCP 57
- AT Commands: UDP 59
- AT Commands: DNS 62
- AT Commands: Dynamic IP 63
- Dynamic IP 63
- AT Commands: PPP/Ethernet 65
- PPP/Ethernet 65
- AT Commands: PassThru 67
- PassThru 67
- SMTP (including SMS) 69
- *SMTPSEND=[email][body] 70
- AT Commands: Other 71
- AT Commands: Friends 74
- Friends 74
- AT Commands: Logging 75
- AT Commands: EDGE/HSDPA 77
- EDGE/HSDPA 77
- Ethernet 78
- Optional 79
- Raven X a name 80
- Raven X or the ESN 80
- Show All Connections 81
- Network Connections 81
- FIGURE 8. New Connection 82
- FIGURE 9. Connection Type 82
- FIGURE 12. Connection Name 83
- FIGURE 14. Finish 84
- FIGURE 15. Connect 85
- Raven X can be 87
- Raven X 87
- Simple Network Management 88
- Protocol (SNMP) 88
- Listening Port 89
- Security Level 89
- User Name and Password 89
- Trap Destination 90
- Warranty Terms 97
- Warranty Conditions 98
- Warranty Terms and Conditions 99
- General Conditions 99
- Technical Support 100
- FIGURE 1. Modem Doctor 105
- AirLink Technical Support 107
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