Appendix D SCCP Call Flows

Call Flow Scenarios for Successful Calls

Step

Station Call Info

Description

 

 

 

Step 3

Station Start Tone (Inside Dial Tone)—Cisco

Cisco CallManager commands Cisco ATA 1 to play a specified

 

CallManager to Cisco ATA 1

tone. If the Cisco ATA is currently playing a tone, the indicated

 

 

tone takes precedence. If the definition is continuous, the

 

 

Cisco ATA plays it until receiving a StationStopTone message. If

 

 

the tone definition contains a duration value, the Cisco ATA stops

 

 

playing the tone at the expiration of the duration. See also Bellcore

 

 

SR-TSV-002275.

 

 

 

Step 4

Station Keypad Button—Cisco ATA 1 to Cisco

Cisco ATA 1 informs the Cisco CallManager when a keypad digit

 

CallManager

is pressed.

 

 

 

Step 5

Station Stop Tone—Cisco CallManager to

Cisco CallManager commands Cisco ATA1 to stop playing the

 

Cisco ATA 1

current tone.

 

 

 

Step 6

Station Keypad Button—Cisco ATA 1 to Cisco

Cisco ATA 1 informs the Cisco CallManager when a keypad digit

 

CallManager

is pressed.

 

 

 

Step 7

Station Keypad Button—Cisco ATA 1 to Cisco

Cisco ATA 1 informs the Cisco CallManager when a keypad digit

 

CallManager

is pressed.

 

 

 

Step 8

Station Keypad Button—Cisco ATA 1 to Cisco

Cisco ATA 1 informs the Cisco CallManager when a keypad digit

 

CallManager

is pressed.

 

 

 

Step 9

Station Call Info—Cisco CallManager to

Cisco CallManager informs Cisco ATA 2 of called and calling

 

Cisco ATA 2

party identification information.

 

 

 

Step 10

Station Set Lamp (Blink)—Cisco CallManager

When the Cisco ATA detects that one port is in an off-hook state,

 

to Cisco ATA 2

the Cisco ATA turns on its Function button, then turns off the

 

 

Function button once both ports are in the on-hook state.

 

 

 

Step 11

Station Set Ringer (Inside

Cisco CallManager commands Cisco ATA 2 to set an audible

 

Ring)—Cisco CallManager to Cisco ATA 2

inside ringing mode. Ring modes are derived from Bellcore

 

 

SR-TSV-002275.

 

 

 

Step 12

Station Call Info—Cisco CallManager to

Cisco CallManager informs Cisco ATA 1 of called and calling

 

Cisco ATA 1

party identification information.

 

 

 

Step 13

Station Start Tone

Cisco CallManager commands Cisco ATA 1 to play an alert tone.

 

(alerting)—Cisco CallManager to Cisco ATA 1

If Cisco ATA 1 is currently playing a tone, the indicated tone takes

 

 

precedence. If the definition is continuous, the Cisco ATA plays it

 

 

until receiving a StationStopTone message. If the tone definition

 

 

contains a duration value, the Cisco ATA stops playing the tone at

 

 

the expiration of the duration. See also Bellcore SR-TSV-002275.

 

 

 

Step 14

Station OffHook—Cisco ATA 2 to

Cisco ATA 2 informs the Cisco CallManager that Cisco ATA 2 is

 

Cisco CallManager

not in an Off Hook condition, and simultaneously provides calling

 

 

party number information to the Cisco CallManager.

 

 

 

Step 15

Station Set Ringer (Off)—Cisco CallManager

Cisco CallManager commands Cisco ATA 2 to set a specified

 

to Cisco ATA 2

audible ringing mode. Ring modes are derived from Bellcore

 

 

SR-TSV-002275.

 

 

 

Step 16

Station Stop Tone—Cisco CallManager to

Cisco CallManager commands Cisco ATA 1 to stop playing the

 

Cisco ATA 1

current tone.

 

 

 

Step 17

Station Set Lamp

When the Cisco ATA detects that one port is in an off-hook state,

 

(Steady)—Cisco CallManager to Cisco ATA 2

the Cisco ATA turns on its function button, then turns off the

 

 

Function button once both ports are in the on-hook state.

 

 

 

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SCCP)

 

D-6

OL-3141-01

 

 

 

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Cisco Systems ATA 186, ATA 188 manual Step Station Call Info Description
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ATA 188, ATA 186 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.
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