Explanation

Chapter 7 Configuring and Debugging Fax Services

Debugging the Cisco ATA 186/188 Fax Services

Input file: faxpassthru.cap

<00.723>: (G723) 2.213:10000 => 2.116:10002

	total	38 pkts(70	frames), lost 0 pkts, fill 7 silence pkts
<01.723>: (G723) 2.116:10002 => 2.213:10000
	total	38 pkts(76	frames), lost 0 pkts, fill 0 silence pkts
<02.pcm>: (G711u) 2.116:10002 => 2.213:10000
	total	2181 pkts(2181 frames), lost 2 pkts, fill 0 silence pkts
<03.pcm>: (G711u) 2.213:10000 => 2.116:10002
	total	2179 pkts(2179 frames), lost 0 pkts, fill 1 silence pkts
----------		FAX Summary 1 ----------
[	25]<2.213=>2.116>		Codec G723
[	26]<2.116=>2.213>		Codec G723
[	101]<2.116=>2.213>		Codec G711u/D
[	102]<2.116=>2.213>		NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[	103]<2.116=>2.213>		NSE PT 100, EVT 193: ECAN OFF, Phase Reversal Detected
[	105]<2.213=>2.116>		NSE PT 100, EVT 192: Up-Speed, CED tone Detected
[	107]<2.213=>2.116>		Codec G711u/D
----------		FAX Summary 2 ----------
PATH: 2.213:10000 => 2.116:10002
[	25]Codec G723
[	105]NSE	PT 100, EVT 192: Up-Speed, CED tone Detected
[	107]Codec G711u/D
PATH: 2.116:10002 => 2.213:10000
[	26]Codec G723
[	101]Codec G711u/D
[	102]NSE	PT 100, EVT 192: Up-Speed, CED tone Detected
[	103]NSE	PT 100, EVT 193: ECAN OFF, Phase Reversal Detected

The output is printed on screen and saved in the file file.sum.

The following lines are described:

• [	25]open file: 00.723, (G723) 2.213:10000 => 2.116:10002

This indicates that rtpcatch reached NAI Sniffer packet number 25 and opened a new file named 00.723 to store an audio stream consisting of G.723-compressed data. The audio path originates from the IP address ending with 2.213 and port 10000 (written as <2.213:1000>) and terminates at the IP address ending with 2.116 and port 10002.

• [	29] <00> 1 silence pkts from TS 1760 (seq# 3)

This indicates that rtpcatch detected one silence RTP packet in the audio path <00> and the silence packet began at timestamp 1760. This occurred at packet number 29 with the RTP sequence number 3.

•[ 106] <02> 2 lost pkts from seq# 39

This indicates that rtpcatch detected two lost RTP packets in the audio path <02>. The missing packets began with sequence number 39. This occurred at packet number 106.

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (H.323)

7-14	OL-4008-01

ATA 188 specifications

The Cisco Systems ATA 188 is a versatile Analog Telephone Adapter designed to facilitate the integration of traditional telephone systems with Voice over Internet Protocol (VoIP) networks. This device has been key in bridging the gap between legacy telephony and modern IP-based communication, allowing users to leverage their existing analog phones while enjoying the benefits of digital connectivity.

One of the main features of the ATA 188 is its ability to connect regular analog phones to a VoIP network, enabling users to make and receive calls over the internet. This significantly reduces calling costs, especially for long-distance and international calls. The ATA 188 supports two phone lines, allowing simultaneous voice calls. This dual-line capability makes it a suitable choice for small businesses or home offices that require multiple lines without the need for extensive infrastructure.

The device is equipped with various technologies that enhance its functionality. It supports the Session Initiation Protocol (SIP) and H.323, making it compatible with a wide range of VoIP service providers. Additionally, the ATA 188 features Quality of Service (QoS) settings, which prioritize voice traffic over the internet, ensuring clear voice quality without interruptions or delays. This is essential for maintaining a professional communication experience, especially in business environments.

Another characteristic of the ATA 188 is its user-friendly configuration interface. It allows users to easily set up and manage their devices through a web-based portal. The configuration process is straightforward, with options to adjust settings such as codec selection, call features including call waiting, and call forwarding functionalities.

Security is also a priority for the ATA 188, as it provides robust protocols to protect call data. The device supports Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS) to encrypt voice traffic and manage signaling securely. This ensures that sensitive conversations remain confidential.

Overall, the Cisco Systems ATA 188 is a reliable and efficient solution for users looking to transition from traditional telephony to VoIP. Its dual-line capacity, compatibility with multiple VoIP standards, user-friendly configuration, and built-in security features make it a valuable asset for both personal and professional communication solutions. In an ever-evolving telecommunications landscape, the ATA 188 remains a relevant and practical choice for integrating legacy telephony with modern internet-based services.

Cisco Systems ATA 188 manual Explanation

Models: ATA 188

Explanation

OL-4008-01

ATA 188 specifications