user manual

Grandstream Networks, Inc., 1297 Beacon St., 2
nd
Flr, Brookline, MA 02446 USA
Tel: [phone], FAX: [phone]
www.grandstream.com
Bellcore, ETSI_RING, ETSI_TAS, DTMF and NTT
B. DTMF Methods
Note: The DTMF Method field under Channels page applies ONLY to PSTN to VOIP calls, not VOIP to
PSTN.
The gateway allows several combinations of sending DTMF across from PSTN to the IP end.
Setting DTMF Method
1 In-audio
2 RTP (RFC2833)
3 In-audio + RTP (RFC2833)
4 SIP INFO
5 In-audio + SIP INFO
6 RTP (RFC2833) + SIP INFO
7 In-audio + RTP (RFC2833) +
SIP INFO
Ex. To set DTMF Method as in-audio: DTMF Method (1-7): ch1-8:1
C. NAT Settings
If the GXW410x is connected behind a firewall, an Outbound Proxy or a STUN server must be configured to
solve the NAT issue. Here are four settings that can be useful in such a scenario:
1. STUN Server (under Advanced Settings page)
Enter a STUN Server IP or FQDN in this field.
2. Outbound Proxy (Under Profile pages)
Enter an Outbound Proxy server IP or FQDN.
3. Use Random Ports (under Advanced Settings page)
By default, this field is set to No. It may needs to be set to “Yes” depending on your network environment.
4. NAT Traversal (under Profile pages)
Set to Yes.
D. Preferred VOCODER (Codec)
Under Profile pages, you can choose from the following different codecs:
PCMU (or G711u), PCMA (or G711a), G729A/B, G723 and GSM.
E. Firmware Upgrade
Under Advanced Settings page, enter “Firmware Server Path” (IP address or FQDN) under “Firmware Upgrade
and Provisioning” field. Select upgrade protocol TFTP or HTTP accordingly. By default, “Always Check for New
Firmware” is selected.
F. Factory Reset
The ONLY way to set the GXW410x to factory default is by following the steps below:
1. Unplug the Ethernet cable.
2. Locate a needle sized hole on the back panel of the gateway unit next to the Power connection.
3. Enter a pin in this hole and press for about 7 seconds.
4. You will see the LAN port LEDs (green and orange) go off and on simultaneously; this indicates the
reset went through.
Last updated on April 1, 2008
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