ZyNOS FAQ . ZyXEL P-2024, P-2024 SERIES

Below you will find brief information for VoIP ATA P-2024 SERIES. The VoIP ATA P-2024 SERIES is a device that allows you to make and receive phone calls over the internet. It also supports a wide range of features, such as call forwarding, caller ID, and voicemail. This device can be used to connect to the internet, making calls, and accessing other network resources.

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P-2024 Support Notes

Click this button to remove an entry from the speed dial phonebook.

Click this button to change the speed dial entry. The speed dial entry displays in the Add New Entry section of the screen where you can edit it.

Click this button to remove all of the entries from the speed dial phonebook.

FAQ

ZyNOS FAQ

What is ZyNOS?

ZyNOS is ZyXEL's proprietary Network Operating System. It is the platform on all P-2024 ATAs that delivers network services and applications. It is designed in a modular fashion so it is easy for developers to add new features. New ZyNOS software upgrades can be easily downloaded from our FTP sites and public download web site as they become available.

How to access the embedded web configurator?

The web configurator is a user friendly configuration interface via a web browser. You can access the web configurator by entering the LAN IP address of the P-2024 in the web browser. The default the P-2024 LAN IP is 192.168.5.1. Your computer IP address must be in the same subnet (or range) as the P-2024＇s LAN IP address.

What is the default LAN IP address and password? And, how do I change it?

The default LAN IP address is "192.168.5.1" and you can change the LAN IP in web configuration (click LAN

> LAN TCP/IP). The default login password is 1234. After you have successfully logged into the web configuration, you can change the password in the Password screen (click SYSTEM > Password. In the

P-2024 Support Notes

Password screen, enter the old password and the new password and the new password again to confirm. Click

Apply to save the changes.

How do I upload the firmware via the web configurator?

Follow the procedure below to update the device firmware via the web configurator. a. Log into the web configurator. b. In the navigation panel, click MAINTENANCE. c. Click the F/W Upload tab. d. Click Browse and locate the directory of the firmware you want to upload and click Upload. e. A message displays indicating that the firmware is successfully updated and that the P-2024 will reboot.

How do I upgrade/back up the firmware using an FTP client program through the LAN?

You can use an FTP program to transfer files (firmware or configuration files) to or from the P-2024. Follow the procedure below to upload the firmware to a device using FTP. a. Use an FTP program to put the firmware file (rename as “ras＂) on the P-2024. After the file transfer is complete, the P-2024 stores the uploaded firmware to its FLASH ROM and reboots.

Note: Do NOT turn off the device while the file transfer process is in progress. Doing so will damage your device and render it useless. Wait until the system LED turns steady before accessing the device. b. To backup your firmware, use the FTP client program to get the ｀ras＇ file from the P-2024.

How do I upload or back up the configuration file (the ROM file) via the web configurator?

You can upload a configuration file to restore the device to the previously saved configuration, or reset the device to the factory defaults.

Follow the procedure below to upload a configuration file via the web configurator. a. Log into the web configurator. b. In the navigation panel, click MAINTENANCE. c. Click the Configuration tab.

P-2024 Support Notes d. Click the Restore tab and click Browse o locate the directory of the configuration file you want to upload. e. Click Upload.

Follow the procedure below to back up the configuration file from the device via the web configurator. a. Log on into the web configurator. b. In the navigation panel, click MAINTENANCE. c. Click the Configuration tab. d. Click Backup. A screen displays prompting you to specify a location to store the configuration file. e. Click Save file and browse to where you want the file to be saved. f. Click Save.

How do I back up/restore configurations using an FTP client program through the LAN? a. Use an FTP client program in your computer (such as the Cuteftp or wsftp client) to log into your

P-2024. b. To back up current device configuration, use the FTP client program to get the 'rom-0' file from the

P-2024. c. To restore device configuration, use the FTP client program to put a configuration file (rename to

ROM-0) on the P-2024.

Why can't I telnet into P-2024 from the WAN?

The following lists the possible reasons why you cannot telnet into the P-2024 from the WAN. a. You did not enable the Telnet service on WAN interface for remote management in SMT menu 24.11. b. Telnet service is enabled but your computer IP address is not included in the secured host list in SMT menu 24.11. In this case, you will see the 'Client IP is not allowed!' error message in the Telnet screen. c. The default filter rule 3 (Telnet_FTP_WAN) is applied in the Input Protocol field in SMT menu 11.5.

This blocks access from the WAN.

What should I do if I forget the system password?

In case you forget the system password. You can reset the unit back to the factory defaults. You can do this by using a sharp pointed object (such as a pen) to press and hold down the Reset button for 5 seconds or until the power LED starts to blink, then release. The unit is reset back to the factory defaults. The reset button is located near the power jack on the unit＇s back panel

P-2024 Support Notes

Note: Resetting the unit back to the factory defaults erases all your previous settings.

What is SUA? When should I use SUA?

SUA (Single User Account) is a unique feature supported by the P-2024 to allow more than one person to access the Internet concurrently for the cost of a single user account.

When P-2024 acting as SUA receives a packet from a local client destined for the outside Internet, it replaces the source address in the IP packet header with its own address and the source port in the TCP or UDP header with another value chosen out of a local pool. It then recomputed the appropriate header checksums and forwards the packet to the Internet as if it originated from the P-2024 using the WAN IP address assigned by the

ISP. When reply packets from the Internet are received by the P-2024, the original IP source address and

TCP/UDP source port numbers are written back into the destination fields of the packet (since it is now moving in the opposite direction), the checksums are recomputed, and the packet is delivered to its intended destination.

This is because SUA keeps a table of the IP addresses and port numbers of the local systems currently using it.

What is the difference between NAT and SUA?

NAT is a generic name defined in RFC 1631 'The IP Network Address Translator (NAT)'. SUA (Internet

Single User Account) is ZyXEL's proprietary implementation and trade name for the PAT feature which is a specific type of NAT. SUA (or PAT for NAT) translates address into port mapping.

The primary motivation for RFC 1631 is that there is not enough IP address to go around. In addition, many corporations simply did not bother to obtain legal (globally unique) IP addresses for their networks and now finding themselves unable to connect to the Internet.

Basically, NAT is the process of translating one address to another. A NAT implementation can be as simple as substituting an IP address with another. This allows a network to solve the illegal address problem mentioned above without going through each and every host.

The goal of ZyXEL's SUA is to minimize the Internet access cost in a small office environment by using a single IP address to represent multiple hosts on the LAN. It does more than IP address translation, so that multiple hosts on the LAN can access the Internet at the same time.

How many network users does SUA/NAT support?

The P-2024 does not limit the number of the users but the number of the sessions for Internet access. The

P-2024 supports 1024 sessions. You can view the current active sessions using the 'ip nat iface enif0 disp' command in SMT menu 24.8.

Key features

Supports up to two SIP accounts
Can be used with cable and ADSL modems
Provides secure access to the internet
Offers advanced security features
Provides remote management capabilities
Supports multiple users
Allows for voice calls over the internet
Supports advanced features
Supports speed dial phone book

Frequently asked questions

The default LAN IP address is 192.168.5.1 and you can change the LAN IP in web configuration. The default login password is 1234.

SUA (Single User Account) is a unique feature supported by the P-2024 to allow more than one person to access the Internet concurrently for the cost of a single user account.

NAT is a generic name defined in RFC 1631 'The IP Network Address Translator (NAT)'. SUA (Internet Single User Account) is ZyXEL's proprietary implementation and trade name for the PAT feature which is a specific type of NAT.

The P-2024 does not limit the number of the users but the number of the sessions for Internet access. The P-2024 supports 1024 sessions.

A DNS (Domain Name Service) server stores the mappings of IP address and domain names. For example, when users enters a web site address (the domain name), the DNS server automatically maps the web site address to a public IP address and redirects the request to the intended web server.

VoIP is the sending of voice signals over the Internet Protocol. This allows you to make phone calls and send faxes over the Internet at a fraction of the cost of using the traditional circuit-switched telephone network.