Re: Calling Web Service method and GPRS

Simon Hart [MVP] wrote:
Hi, Matt, Scott,

When you say develop a server on your device to listen for push
messages, I am interested to know how you get around the issues of IP
addressing, and the mobile networks use of NAT and PAT on their
standard mobile internet connections?

This is an interesting topic and very real world. My client has a private
APN which works via a leased line between the GGSN and the CPN (Converged
Packet Network)to our clients LAN, so when our devices connect to the private
APN, the GGSN then releases a dynamic IP address from a pool of
pre-configured reusable addresses. The GGSN talks directly to the CPN in fact
it bridges the gap between the GPRS network and the CPN. The CPN then
connects via a leased line channel to the corporate LAN. You can use IPSec
here instead or use a combination of both (failover).

Using this infrastructure allows us to have a two communication from and to
the devices in the field from the back office running on the LAN.
U'r right :))
Consider using better devices, more safe, more production avare.
Not access point dependen.
See'u at nearest Motorola/Symbol :) conference.


MS - is fun for kiddies (in this task) :) - not so reliable, not so
satble - not so usefull


mak
.

Loading