Grandstream gateway for Faxing

Modified on Wed, 30 Jul at 4:32 PM

Applies to models such as HT801, HT802, HT812, HT814, HT818

Step 1: Log In to the Web Interface

Connect a PC to the same network as the ATA device.
Find the IP address of the ATA (pick up the handset connected to FXS port and dial *** → then dial 02 to hear IP).
Open a browser and go to: http://[DEVICE_IP]
Log in (default credentials:
- Username: admin
- Password: admin

Step 2: Navigate to FXS Port Settings

Go to the "FXS Port" tab (e.g., FXS Port 1, FXS Port 2, etc.).
Configure the following:

SIP Settings

Field	Value
Primary SIP Server	`nsip.aatroxcommunications.com.au`
SIP User ID	`YOUR_USER_ID`
Authenticate ID	`YOUR_USER_ID`
Authenticate Password	`YOUR_PASSWORD`
Name	`Fax`
SIP Registration	`Yes`
Outgoing Call Without Reg	`No`
Unregister on Reboot	`Yes`
Register Expiration	`3`
Enable SIP OPTIONS Keep Alive	`Yes`
Use Random SIP Port	`Yes`
Use Random RTP Port	`Yes`

Call Waiting / Tone Handling

Feature	Setting
Disable Call-Waiting	`Yes`
Disable Call-Waiting Caller ID	`Yes`
Disable Call-Waiting Tone	`Yes`
Use First Matching Vocoder in 200OK SDP	`Yes`

Audio Codec Preferences

Set the Preferred Vocoder list (in order):

PCMA
PCMU
PCMA
PCMA
PCMA
PCMA
PCMA

Field	Value
iLBC Frame Size	20ms
VAD	No
Symmetric RTP	No

Fax Settings

Setting	Value
Fax Mode	T.38
Re-INVITE After Fax Tone Detected	Enabled

Buffer & Echo Settings

Field	Value
Jitter Buffer Type	Adaptive
Jitter Buffer Length	High
SLIC Setting	AUSTRALIA
Gain	TX 0dB, RX -12dB
Disable Line Echo Canceller	Yes
Disable Network Echo Suppressor	Yes

Step 3: Configure Regional Tones

Go to Advanced Settings tab
Scroll to Custom Ring Tone & Dial Tone Settings
Insert the following tone strings into respective fields:

Tone Type	Value
Dial Tone	`f1=425@-11,f2=0@-11,c=0/0;`
Ringback Tone	`f1=440@-17,f2=480@-17,c=2000/4000;`
Busy Tone	`f1=425@-11,f2=0@-11,c=37/37;`
Reorder Tone	`f1=425@-11,f2=0@-11,c=37/37;`
Confirmation Tone	`f1=350@-11,f2=440@-11,c=100/100-100/100-100/100;`
Call Waiting Tone	`f1=440@-13,c=300/10000;`
Prompt Tone	`f1=350@-17,f2=440@-17,c=0/0;`

Step 4: Save & Apply Settings

Scroll to the bottom of the configuration page.
Click Update or Apply.
When prompted, reboot the ATA to apply settings.