Multi-tech-systems MTCBA-G-F2 Manuel d'utilisateur télécharger pdf (Page 48)

Troubleshooting

48

Solutions for “no carrier” message (cont’d)

If the

modem

returns

Then ask … Action

no carrier

(esp. for

voice

communi-

cation)

Be sure that the

semicolon character (“;”)

is typed immediately

after the phone number

in the AT command. E.g.,

ATD######;

type AT+CBST=0,0,3

Configure the SIM card

for data/fax calls.

Is the received

signal strong

enough?

See “Signal Strength

Verification,”

page 38.

Is the antenna

properly

connected?

See “Antenna

Specifications,”

page 8.

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