Campbell RavenXTG GPRS/EDGE Spezifikationen PDF herunterladen (Seite 36)

Appendix D. Understanding APNs

D-2

These mobile connections are visible on the public Internet so security and

traffic blocking need to be taken into consideration. The customer back-end

connection only needs to provide Internet access.

Custom APN: A custom APN is just that – custom. In this case the end-

customer works with Cingular to determine the appropriate settings for:

IP addressing requirements: Are public IP addresses required? If so, who

provides the addresses – Cingular or the customer? Do these addresses need to

be static?

Connection from Cingular to customer network: Cingular can provide the

following connectivity options from their network to the customer’s network,

depending on security and cost requirements:

• Dedicated frame relay connection where the Cingular-to-customer

connection is not publicly accessible.

• Internet VPN connection where the Cingular-to-customer connection is via

IPsec VPN.

• Internet connection: Can be lower cost if security requirements allow such

connections as no security is provided by Cingular.

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Campbell RavenXTG GPRS/EDGE Spezifikationen Seite 36