Add GPRS page, WAP gateway details, connection guide

content/gprs.md

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+---
+title: GPRS
+description: >
+  Connecting to the Internet over the EMF GSM network
+---
+
+GPRS is experimentally available on the EMF GSM network, and any APN should work (`internet` is fine).
+
+# WAP Gateway
+
+{{% alert title="Note" color="warning" %}}This WAP gateway is graciously hosted by [Billy](https://billy.wales), and isn't on the rest of the EMF GSM infrastructure. Your traffic will leave the camp network in order to get there, and we can't guarantee support for it.
+{{% /alert %}}
+
+For devices that need a WAP Gateway (such as the Nokia 6310i and Nokia 6100), a third party installation of Kannel is available at `129.151.64.135`.
+The following steps are written with a Nokia device in mind, but should be useful for anyone trying to connect with the WAP gateway.
+
+1. Press Menu, select Services, and Settings.
+2. Select Active service settings.
+3. Scroll to the set you would like to edit and activate, and press *Activate*.
+4. Select *Edit active service settings*, and enter the following information:
+    - Settings' name: "EMF" or similar name.
+    - Homepage: `http://wap.billy.wales` (or similar WML homepage)
+    - Session Mode: Permanent
+    - Connection Security: Off
+    - Data Bearer: GPRS
+    - GPRS Connection: When needed (or Always, but this may drain battery!)
+    - GPRS access point: internet
+    - IP address: `129.151.64.135`
+    - Authentication Type: Normal
+    - Login Type: Automatic
+    - User name / password: (leave blank)