Wavecom GR64 Application Note page 21

Once the remote download has completed, this form will close automatically.
Then select 'Disconnect' and wait for "NOT Connected" to be displayed, after
which the Remote Download form can be closed.
Note- For Disconnect to work with CSD the default escape sequence ('+++AT')
must be enabled (AT*E2EST=1). A one second guard time should also be set
(AT*E2ESC=1).
Gx64 APPLICATION NOTE
EA Remote Download
Page: 21/22
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable