Proxy SIP proxy server for all outbound requests

ATA Voice Field Reference

PSTN Line page (SPA3102)

Restrict Source IP	If Lines 1 and 2 use the same SIP Port value and the
	Restrict Source IP feature is enabled, the proxy IP address
	for Lines 1 and 2 is treated as an acceptable IP address for
	both lines. To enable the Restrict Source IP feature, select
	yes. Otherwise, select no. If configured, the PAP2T will
	drop all packets sent to its SIP Ports originated from an
	untrusted IP address. A source IP address is untrusted if it
	does not match any of the IP addresses resolved from the
	configured Proxy (or Outbound Proxy if Use Outbound
	Proxy is yes).
	The default is no.

Referor Bye Delay	Controls when the ATA device sends BYE to terminate stale
	call legs upon completion of call transfers. Multiple delay
	settings (Referor, Refer Target, Referee, and Refer-To
	Target) are configured on this screen. For the Referor Bye
	Delay, enter the appropriate period of time in seconds.
	The default is 4.

Refer Target Bye	For the Refer Target Bye Delay, enter the appropriate
Delay	period of time in seconds.
	The default is 0.

Referee Bye Delay	For the Referee Bye Delay, enter the appropriate period of
	time in seconds.
	The default is 0.

Refer-To Target	To contact the refer-to target, select yes. Otherwise, select
Contact	no.
	The default is no.

Sticky 183	If this feature is enabled, the IP telephony ignores further
	180 SIP responses after receiving the first 183 SIP
	response for an outbound INVITE. To enable this feature,
	select yes. Otherwise, select no.
	The default is no.

Voice tab > PSTN Line page >

Proxy and Registration section

Proxy

SIP proxy server for all outbound requests.

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 WRP400, SPA2102, SPA3102, SPA8000 Proxy SIP proxy server for all outbound requests

Models: PAP2T SPA8000 SPA3102 WRP400 SPA2102