IMPORTANT NOTE: Wireless 3G UMTS/HSDPA modules purchased in the US for use on AT&T networks in the USA will not work on similar networks in other countries.

“Insert SIM” or “Unavailable” is displayed on the codec screen next to “3GIP” or “4GIP” (UMTS/HSDPA Modules):

If “Insert SIM” or “Unavailable” is displayed in a Tieline 3G HSDPA or 4G LTE module and you have inserted the SIM into the module, first power down the codec then:

  1. Check to make sure the SIM card is inserted into the module the right way up with the gold section on the SIM pointing downwards, and
  2. It is also possible that the SIM card is inserted but not making proper contact due to a variation in SIM card thickness from some Telcos. You can place a folded piece of paper under the SIM on the non-contact side to ensure the SIM card contacts are in contact with the module.
  3. Reapply power to the codec and wait 30 seconds to see if this has solved the problem.
  4. If it hasn’t solved the problem, power the codec down and remove the SIM card from the module.
  5. Then insert the SIM card into a cell-phone and power up the phone to see if you need to enter a pin number to access the SIM.
  6. If this is the case, you will need to use the cell-phone to deactivate the pin for the SIM before using it in a Tieline 3G module because the Tieline G3 codec has no way to enter the SIM pin number.
  7. Deactivate the SIM card pin and reinsert it into the module and codec to see if this solves the connection problem.

“Prs Entr” is displayed next to “3GIP” or “4GIP”  but I don’t seem to be able to connect to the cellular network.

  1. Check the access point setting in the codec.
  2. Press SOFTKEY 3 “Wiz” > Press “OK” > Wireless Network [3G/UMTS IP] press “OK” > Navigate using the Menu Selector to the correct wireless network and press “OK”.
  3. Complete the menu settings and press the “Enter/Dial” button on the keypad to try and connect to the network.
  4. If it still doesn’t connect to the 3G network an incorrect access point may be programmed. Check with your Telco provider or look for the details in your cell-phone to confirm you are trying to program the right network access point into the codec. If the access point is a recently added network access point you will need to add a custom access point into the codec.

My signal strength is above 5 but I still can’t connect over cellular networks.

It is possible that your drop-outs could be caused by heavy cell-phone usage in the area you are calling from. This is often the case if you are broadcasting from a concert venue or major sports event where the network cell towers are swamped by many users simultaneously.

If you have already checked that you have the correct access point programmed into the codec you may not be in an area with 3G coverage. Have you performed wireless broadcasts from the area previously? If not, you can check 3G coverage in the following way:

  1. Power down the codec and remove the SIM card.
  2. Place the SIM card into a cell-phone and power up the phone.
  3. The phone may have an indication on the front screen that shows either 2G (GSM) or 3G/4G services as available. If you are not sure, another way is to try to surf the internet. You will be able to do this if you have cellular access available in the area.

My cellular wireless connection seems to be dropping out from time-to-time.

  1. Check that the signal strength displayed in the top-right corner of the codec LCD screen is 5 or higher. You may experience problems if the signal strength is lower than 5.
  2. It is possible to purchase a high-gain antenna and attach it to a Tieline cellular wireless module to improve signal strength in marginal reception areas.