ZyXEL Communications ACCESSING INTERNET & INTRANET omni series - Manual (Page 70)

58 V.120 ISDN Communications
support out-of-band signaling, network signals are transmitted
through the B channels. This reduces the bandwidth to 56Kbps.
When you are making a V.120 call, make sure that the
communication supports out-of-band signaling. If it does not support
out-of-band signaling, you will need to set your TA to 56K mode
using the AT&E1 command (AT&E0 to set it back to 64k mode.) If
your TA is on the receiving end, you can keep the setting at AT&E0,
64k data mode. The TA will automatically switch between the two
speeds in answer mode.
Configuring the V.120 mode
To configure for a 56K V.120 call, type:
ATB20 (Select V.120 for communication)
TA responds:
OK
Type:
AT&E1 (Select 56K data mode)
TA responds:
OK
Now you are ready to dial the phone number. If you need to save the
setting into non-volatile RAM, issue the commands:
Type:
AT&W0 (Save the settings to profile 0) [Profiles available: 0-3]
TA responds:
OK
Type:
ATZ0 (Save stored settings as the power on settings to profile 0)
[Profiles available: 0-3]
TA responds:
OK