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 186, or Analog Telephone Adapter, revolutionized the way traditional telephony interacted with Voice over Internet Protocol (VoIP) systems. Designed primarily for home and small office use, the ATA 186 allows users to connect standard analog phones and fax machines to a network, enabling them to take advantage of the benefits of VoIP technology.

One of the defining features of the ATA 186 is its dual port architecture. It includes two FXS ports, allowing users to connect up to two analog telephones. This functionality means that multiple devices can leverage VoIP services simultaneously without the need for separate adapters for each phone. The flexibility of the ATA 186 helps streamline the user experience, facilitating voice communication over an IP network while ensuring users can still use their existing phone equipment.

The ATA 186 employs various technologies to maintain high-quality voice calls. It supports standard voice codecs such as G.711 and G.729, which ensure efficient bandwidth usage while preserving call clarity. The adaptive jitter buffer technology further enhances call quality, compensating for network variations and minimizing latency, which is crucial for clear and uninterrupted conversations.

Additionally, the ATA 186 provides users with advanced calling features that were traditionally available only on PBX systems. These features include caller ID, call waiting, and voicemail functionality, integrating seamlessly with typical telephony services. The device also supports T.38 fax relay, allowing users to send and receive faxes over the internet, thus addressing the needs of environments where fax communication remains essential.

The security of VoIP conversations is also a priority for the ATA 186. It employs encryption protocols such as Secure Real-time Transport Protocol (SRTP) and Transport Layer Security (TLS), ensuring that voice data is securely transmitted across the network. This focus on security helps protect sensitive information transmitted during calls.

Installation and configuration of the ATA 186 is streamlined, with an intuitive web-based interface that simplifies the setup process. This accessibility makes it suitable for users with varying levels of technical expertise, as frequently required adjustments, such as network configurations and firmware updates, can be easily managed.

In conclusion, the Cisco Systems ATA 186 stands out as a versatile and robust solution for users looking to integrate analog phones into a VoIP environment. With its dual port capabilities, high-quality voice codecs, advanced call features, and security measures, it offers a compelling choice for both residential and commercial users seeking seamless telephony integration. As technology evolves, devices like the ATA 186 remain cornerstones in bridging traditional telephony with modern communication systems.
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