User guide

AirCard 781S Mobile Hotspot User Guide
62 2400389
SIM Locked
1. Contact AT&T Customer Care for the PIN to unlock the SIM.
2. Go to the AT&T Unite Pro Manager homepage and log in as Administrator.
3. Enter the SIM PIN when prompted.
4. Click Save.
SIM MEP Locked
1. Contact AT&T Customer Care for the MEP unlock codes and tool to unlock your
Mobile Wi-Fi.
Temperature-related alerts
The mobile hotspot is designed to work over a wide temperature range. (See
Environmental specifications on page 65 for details.) The mobile hotspot will shut down
automatically if it goes out of the supported temperature range.
Move the mobile hotspot to an area where the temperature is more suitable and, if the
mobile hotspot is too warm, make sure the area is well-ventilated and air can circulate
around the device.
Note: The battery may not recharge if the mobile hotspot is outside the operating temperature
range.
Connection alerts
Some connection alerts include instructions for resolving them. For other connection
alerts, including those in the following table, contact AT&T Customer Care for
assistance.
Table 5-1: Connection alerts
Alert Description
8 Operator Determined Barring
25 LLC or SNDCP failure
26 Insufficient resources
27 Missing or unknown APN
28 Unknown PDP address or type
29 User authentication failed
30 Activation rejected by GGSN
32 Service Option not supported
33 Service Option not subscribed