Ext Ip

ATA Voice Field Reference

SIP page

Insert VIA rport	Inserts the parameter into the VIA header of SIP
	responses if the received-from IP and VIA sent-by IP
	values differ. Select yes or no from the drop-down menu.
	The default is no.

Substitute VIA Addr	Lets you use NAT-mapped IP:port values in the VIA header.
	Select yes or no from the drop-down menu.
	The default is no.

Send Resp To Src	Sends responses to the request source port instead of the
Port	VIA sent-by port. Select yes or no from the drop-down
	menu.
	The default is no.

STUN Enable	Enables the use of STUN to discover NAT mapping. Select
	yes or no from the drop-down menu.
	The default is no.

STUN Test Enable	If the STUN Enable feature is enabled and a valid STUN
	server is available, the ATA device can perform a NAT-type
	discovery operation when it powers on. It contacts the
	configured STUN server, and the result of the discovery is
	reported in a Warning header in all subsequent REGISTER
	requests. If the ATA device detects symmetric NAT or a
	symmetric firewall, NAT mapping is disabled.
	The default is no.

STUN Server	IP address or fully-qualified domain name of the STUN
	server to contact for NAT mapping discovery.

EXT IP	External IP address to substitute for the actual IP address
	of the ATA device in all outgoing SIP messages. If 0.0.0.0 is
	specified, no IP address substitution is performed.
	If this parameter is specified, the ATA device assumes this
	IP address when generating SIP messages and SDP (if
	NAT Mapping is enabled for that line). However, the results
	of STUN and VIA received parameter processing, if
	available, supersede this statically configured value.
	The default is 0.0.0.0.

ATA Administration Guide

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PAP2T, SPA8000, SPA3102, WRP400, SPA2102 specifications

The Cisco Systems SPA2102 is a versatile Voice over Internet Protocol (VoIP) adapter that serves as a bridge between traditional telephony systems and modern IP networks. Designed primarily for small to medium businesses, the SPA2102 is highly regarded for its reliability, ease of use, and rich feature set. This device allows users to make and receive phone calls over the internet while maintaining the ability to connect traditional analog phones.

One of the standout features of the SPA2102 is its dual-port capability. The device includes two FXS ports, allowing users to connect two separate analog telephones. This makes it an ideal choice for businesses that want to retain their existing telephony infrastructure while transitioning to a VoIP system. The ability to utilize two telephone lines simultaneously provides flexibility and convenience, especially for users in a busy office environment.

The SPA2102 leverages Session Initiation Protocol (SIP) technology, which is widely recognized for its robustness and interoperability. The support for SIP ensures that the SPA2102 can work seamlessly with various VoIP service providers, offering users a broad range of options for their telecommunication needs. In addition to SIP, the device supports various codecs, including G.711, G.726, and G.729, allowing for flexible audio quality settings and bandwidth management.

Security is also a critical aspect of the SPA2102. It incorporates advanced encryption methods, such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), to protect voice communications from potential eavesdropping. This focus on security makes the SPA2102 a reliable choice for businesses concerned about the confidentiality of their conversations.

The device is easy to configure and manage, thanks to its web-based interface. This allows administrators to quickly set up the adapter, manage network settings, and troubleshoot any issues that may arise. Furthermore, the SPA2102 supports Quality of Service (QoS) features, ensuring that voice traffic is prioritized over other types of network traffic, which enhances call quality and reliability.

Overall, the Cisco SPA2102 is a powerful, user-friendly VoIP adapter that combines traditional telephony with modern IP technology. Its dual-port capability, support for SIP, extensive security features, and ease of configuration make it a solid choice for businesses looking to innovate their communication systems while minimizing disruption. Whether used in a small office or a larger organizational setting, the SPA2102 continues to be a reliable component of VoIP solutions.

Cisco Systems PAP2T, SPA2102, SPA3102, WRP400, SPA8000 manual Ext Ip

Models: PAP2T SPA8000 SPA3102 WRP400 SPA2102

ATA Voice Field Reference

PAP2T, SPA8000, SPA3102, WRP400, SPA2102 specifications