Line Enable section

ATA Voice Field Reference

Line page

The SPA2102 provides one User tab for each Line tab (User 1 and User 2), where many of the line-specific configuration parameters are contained. The SPA8000 does not provide User tabs, but consolidates all the line-specific parameters on the Line tab.

Voice tab > Line page >

Line Enable	To enable this line for service, select yes. Otherwise, select
	no.
	The default is yes.

Trunk Enable	To add this line to a trunk group, choose the trunk group
	number. Otherwise, choose none. This feature is available
	on the SPA8000 only.
	The default is none.

Voice tab > Line page >

Streaming Audio Server (SAS) section

SAS Enable	To enable the use of the line as a streaming audio source,
	select yes. Otherwise, select no. If enabled, the line cannot
	be used for outgoing calls. Instead, it auto-answers
	incoming calls and streams audio RTP packets to the caller.
	The default is no.

SAS DLG Refresh	If this value is not zero, it is the interval at which the
Intvl	streaming audio server sends out session refresh (SIP re-
	INVITE) messages to determine whether the connection to
	the caller is still active. If the caller does not respond to the
	refresh message, the ATA device ends this call with a SIP
	BYE message. The range is 0 to 255 seconds (0 means that
	the session refresh is disabled).
	The default is 30.

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.