How do I setup my Grandstream Phone for Delta3/iconnect network?

Typical configuration is:
SIP Server: natrelay.deltathree.com outbound proxy: leave it blank User ID: xxxxxx (your Delta3 account number) Authentication/Login ID: xxxxx (same as above, your Delta3 account number) Password: xxxxx (your Delta3 password) Dial plan: 6666

How do I setup my Grandstream Phone for FWD service?

Typical configuration is:
SIP Server: fwd.pulver.com
Outbound proxy: 192.246.69.247:5082 (used only when behind firewall, otherwise leave it blank)
User ID: xxxxxx (your FWD account number)
Authentication/Login ID: xxxxx (same as above, your FWD account number)
Password: xxxxx (your FWD password)
NAT Traversal: No (You need to set up your STUN server if you don't have outbound proxy)

How do I setup my Grandstream Phone for go2call network?

Typical configuration is:
SIP Server: voip01.go2call.com
Outbound proxy: (Should leave it blank, because it's a GW)
User ID: xxxxx (your Go2Call PIN number)
Authentication ID: same as your User ID
Password: xxxxxxx (Your Go2Call password)
NAT Traversal: YES (WITHOUT setting the STUN server)

How do I setup my Grandstream Phone for MCI(test) network?

Typical configuration is:
SIP Server: siptest.mci.com
Outbound proxy: (use an outbound proxy if MCI provides one for you)
User ID: xxxxx (your MCI assigned account/phone number)
Authentication ID: (Your MCI assigned id, i.e., foo)

Password: your MCI password
NAT Traversal: No (You need to set up your STUN server if you don't have outbound proxy)
Note: MCI Proxy server seems to respond our phone client SIP messages correctly.

How do I setup my Grandstream Phone for nikotel network?

Typical configuration is:
SIP Server: calamar0.nikotel.com
Outbound proxy: leave it blank
User ID: xxxxx (your nikotel account number)
Authentication ID: same as your User ID
Password: your nikotel password
NAT Traversal: YES (WITHOUT setting the STUN server)

How do I setup my Grandstream Phone for SIPphone.com service?

Typical configuration is:
SIP Server: proxy01.sipphone.com
Outbound proxy: (leave it blank)
User ID: xxxxxx (your SIPphone.com account number)
Authentication/Login ID: xxxxx (same as above, your SIPphone.com account number)
Password: xxxxx (your SIPphone.com password)
NAT Traversal: Yes (You need to set up your STUN server if you don't have outbound proxy)
STUN Server: stun01.sipphone.com

How do I setup my Grandstream Phone for Telappliant VoIPtalk service?

Typical configuration is:

SIP Server: voiptalk.org
Outbound proxy: (use an outbound proxy if VoIPtalk provides one for you)
User ID: xxxxx (your VoIPtalk assigned account/phone number)
Authentication ID: (Your VoIPtalk assigned id)
Password: your VoIPtalk password

NAT Traversal: No (You need to set up your STUN server if you don't have outbound proxy)

How do I setup my Grandstream Phone for telic.net network?

Typical configuration is:
SIP Server: sip.telic.net
Outbound proxy: (Use outbound proxy, it will not work under STUN for now)
User ID: xxxxx (your Telic.net account number)
Authentication ID: same as your User ID
Password: your Telic.net password
Note: STUN is not working yet against Telic.net's SIP proxy server for now.

How do I setup my Grandstream Phone for VoIPBuster service?

You need a VoIPBuster username and password in order to call via VoIPBuster. Simply sign up and create your login at www.VoIPBuster.com. If you need help configuring your SIP device, please check the manual that came with the Grandstream SIP phone

Typical Configuration is:
SIP Server: sip1.voipbuster.com
User ID: Your VoIPBuster username
Auth ID: same as User ID
Auth Password: Your password
STUN Server: stun.voipbuster.com
Domain/Realm (optional): voipbuster.com

Codecs: G711 (64 kbps), G726 (32 kbps), G729 (8 kbps), G723 (5.3 & 6.3 kbps).
If you have audio problems:

How do I setup my Grandstream Phone for Yesfone service?

Typical configuration is:
SIP Server: sip.yesfone.net
Outbound proxy: leave it blank
User ID: xxxxx (your Yesfone account number)
Authentication ID: same as your User ID
Password: your Yesfone password
NAT Traversal: YES (WITHOUT setting the STUN server)