HP J3188A Installation And Reference Manual page 62

Modem Configuration
Practical Peripherals PM288MT II V.34
Intel 14.4EX
Supra FAX 288
C-2
At the hub end: Issue the following AT command:
A0101:
Next Rev: AT&F0&C1S0=1Q2&D3&W0
At the user end: Issue the following AT command:
AT&F0&W0
At the hub end: Set the A/B switch to A
Issue the following AT command:
AT&F0&R1&W0
At the user end: Set the A/B switch to A
Issue the following AT command:
AT&F0&W0
At the hub end: Issue the following AT command:
A0101:
Next Rev: AT&F0&C1S0=1Q2&D3&K3&W0
At the user end: Issue the following AT command:
AT&F0&W0
AT&F0&C2S0=1Q2&D3&W0
AT&F0&C0S0=1Q2&D3&K3&W0