User Manual

MBF, Multi Band Repeater

PRODUCT DESCRIPTION AND USER'S MANUAL

Solution

The most common cause is that the number called is the voice number of the SIM, not the data number.

Therefore, make sure to dial the data number.

If data call is used, the problem probably is an illegal modem initialization string.

In order to change the modem string, go to the repeater command prompt. Try changing the modem

initialization string and log out to let the controller reinitialize the modem.

If problem remains, try a few different modem initialization strings. Axell Wireless has been successful with

the following modem initialization strings:

AT+CBST=71,0,1;\Q3

AT+CBST=7,0,1;\Q3

AT+CBST=0,0,1;\Q3

AT+CBST=7,0,3;\Q3

Please refer to the modem manual for detailed description of the modem initialization strings.

Problem 3

It is possible to call the repeater from another GSM mobile, but not from an analogue modem.

Solution

This problem is most likely related to the modem configuration and/or the configuration of the IFU unit. Try

to decrease the communications speed and make sure that the modem error correction is supported by the

IFU. Verify the IFU configuration to see if there are any known problems with the modem connections.

Problem 4

When dialling the repeater, or when the repeater is dialling the Element Manager, the connection is

terminated before the handshaking is completed.

Solution

When a repeater is answering an incoming modem call, or calling up the OMC to deliver an alarm or a report,

the repeater will wait a configurable number of seconds for the call to be established. If no communication is

established within this time, the call will be hung up. If this interval is set too low, the handshaking is

terminated too fast. In the RMC, verify the Modem Connect Time to see that it is set to at least 30 seconds.

5.8 Integration into the AEM

When the repeater has been installed at site and the remote communication has been enabled, the repeater can

be integrated to the Axell Element Manager. This is done by the operator of the AEM. After entering the

telephone number to the repeater, the AEM dials up the repeater, downloads all the repeater parameters and

statuses into a database. When all parameters have been downloaded, the AEM configures the repeater with

the telephone number where alarms and reports should be sent, and optionally with a secondary telephone

number where the repeater can dial in case connection to primary number fails.

When heartbeat reports and alarms are sent from the repeater to the AEM also the latest information about the

status and RF-configuration is included. This means that the AEM operator always has information about the

current status in the AEM database (and do not need to call the repeater to find this out).

Note! Once the repeater is integrated to the AEM, all changes to the repeater should preferably be done from

the Axell Element Manager in order to ensure that the database always contains correct information.