Communication problem Jazz and Gsm modem

[Bazel27]

Hello .

i have a problem.

In my project I I have Jazz T10 and GSM modemEnfora1308 connected to it.

So, sms function works beautifully , Plc receiveand send sms.

But now , I want to debug program online, so I connect another Enfora1308 modem to the pc , andit initialized.

Then I’m trying to connect to the PLC side modem, but message occur that connection timeexpired or time out.

As I understand , to receive and send sms , SB181 must be on , and what about online debug through modem.

SB 73 must be active ? or I;m doing somethingwrong ?

Hope you understand my problem

Thx

Aleksei