How to disable sip ALG to prevent VoIP calls disconnecting on DSL service

Might be a firewall setting in your router. See if you can change the SIP ALG setting. If it is off, you need to turn it on.

Here is a site that will help you identify the SIP ALG in your router:
http://www.nextiva.com/support/how-do-i-identify-sip-alg.html.

SIP (Session Initiation Protocol) is a protocol used to establish, modify and terminate VOIP telephone calls. Using SIP, you can make cheap calls to a landline and regular mobile phones. With Nimbuzz SIP support, you can make Internet calls via the Nimbuzz Phonebook feature by adding any SIP provider you already use. Costs depend on your SIP provider rates.
SIP calling is mostly used to make cheap international calls.

You can go to Options > Settings > SIP Accounts to register an account.
After that you can place VoIP calls via the Phonebook.

User Fring if you want to make free calls. It works on Yahoo Messenger and Gtalk so you can call your buddies available on Yahoo! or Gtalk.

BEFORE YOU BEGIN, please note the following:
On the Nokia E71 some of VoIP settings are hidden by default, and you will need Nokia's new VoIP SIP application.
This application can be used to configure VoIP settings on your Nokia. You can create new VoIP profiles and modify the existing ones, and create and modify VoIP parameters and NAT/Firewall traversal settings and that are normally not visible on the device UI, such as codec settings and SIP domain-specific NAT/FW settings. It is also possible to save all the VoIP profile settings to a text file. It also enables VoIP over WCDMA which means you can make VoIP call over 3G Internet connection.
Using your PC you can download free Nokia SIP VoIP application from here or you can check Nokia web sitefor latest version.
Extract and install SIS file using Nokia PC Suite software on your PC.
Once installation is complete you will be able to see "SIP VoIP Settings" application under Applications menu on your Nokia, which you will need in STEP 5 of this configuration guide for better voice quallity or enabling VoIP over 3G Internet connection.
Here you can find Nokia E71 SIP settings for voip setup and SIP client configuration guide with VoIPVoIP service.
STEP 1 Go to Tools / Settings / Connection / SIP settings. Create the following profile
Profile Name: VoIPVoIP Service
Profile: IETF Default
Access point: (your WLAN AP name)
Public user name: [email protected] ( Instead of 5551231234 account number example, use the account number assigned to you when signed up for VoIPVoIP service. When recorded your phone will show sip:[email protected] )
Use Compression: No
Registration: "Always on "
Use Security: No

STEP 2 You do not need to enter Proxy Server settings
Proxy Server Address: none
Registrar Server:none
Realm: none
User Name: none

STEP 3 Enter the following for Registrar Server settings
Registrar Server: sip3.voipvoip.com (When recorded your phone will show sip:sip3.voipvoip.com)
Realm: voipvoip.com
User Name: 5551231234 (Instead of 5551231234 account number example, use the account number assigned to you when signed up for VoIPVoIP service. )
Password: Enter the password that you chose when you signed up for the service.
Transport Type: UDP
Port: 5060

STEP 4 Go to Tools / Settings / Connection / Internet Tel. Settings
Create a new profile for "voipvoip"(555123xxxx), name it "voipvoip"
Choose "voipvoip" as Preferred profile
STEP 5 For better voice quality or in order to be able to make VoIP calls over 3G internet connection you need to use Nokia SIP VoIP Application you installed.
Go to Applications on your phone and click on "SIP VoIP Settings" application. Choose VoIP services/VoIPVoIP (or the name of your VoIPVoIP account Internet profile.)
Click on "Profile Settings" and find "Allow VoIP over WCDMA" option and change it to "ON" This change allows VoIP over 3G connection on Nokia phones.
For better voice quality go to Codecs and delete all codecs except G729. There should be only G729 codec left under codecs setting
STEP 6 Reboot your phone. Once your phone is back on it will automatically register to VoIPVoIP.
Once it is registered you can start making calls.
Default call type: To switch between normal GSM calls or VOIP calls, navigate to Tools / Settings / Call / Default call type. Select Cellular to make normal calls to the phone number or Internet to use VoIP to call the number or address
Make Calls!
To dial any phone number that is part of the NANP (North American Numbering Plan), you must dial:
1 + Area Code + Phone number
To dial any phone number that is outside of the NANP (North American Numbering Plan), you must dial:
Country Code + City Code + Phone number
For example if you want to call Brazil (country code 55) phone number in Rio de Janeiro (city code 21) you must dial 5521 and phone number. + sign can also be used and number can be dialed as +5521xxxxxxx


BUT RATHER THAN FOLLOWING THESE PLS CALL TO YOUR CUSTOMER CARE THEY WIL GIVE THE SETTINGS. SAVE THEM. THEN FOLLOW THE INSTRUCTIONS. THIS DOES NOT COST ANY COST. PLEASE TRY THIS

go to Tools > Settings > Connection > SIP settings
Profile name: any
Service Profile: IETF
Default Access point: select your access point
Public user name: sip:[email protected]
Use compression: No
Registration: select your preference
Use security: No
Proxy server: empty/no settings
Registrar server:
> Registrar server address: sip:voip-server.com
> Realm: asterisk
> Username: voip-ext-no.
> Password: voip-password
> Transport type: Auto
> Port: 5060

Then go back to Connection > Internet Tel.
create profile and select the SIP settings you just created.

connect to the modem through telnet and type
application unbind SIP 5060 saveall

canceled my softphone and will replace it

This in it's most basic description means that the phone is unable to register with the SIP server, most likely for lack of internet connectivity or a firewall blocking the packets.

If you've verified connectivity and opened the proper ports and the phone fails to initialize and still getting “URL Call Disabled” or all of the above parameters are correct, update the firmware for the router. This can usually be done within the router configuration. Then reboot in order, the cable modem or DSL, the router or switch, then the phone. This may solve the problem.

If still having the same issue, confirm in the router configuration for settings such as SIP proxy, gateway, or application layer or any configuration setting for SIP or VOIP. If any of these do exist, make sure they are turned off as these may only confuse or adversely affect many implementations.