E1 Call Flows

Outseize Message for MFR2 Signaling with Called Party Only (Network)

This call flow shows the events that occur at the Signaling layer.

1. Seize

2. Outpulse Stage 1

3. Send Host ACK

4. Wait for Host Control (with Answer Supervision)

5. Stage 1 digits are 862-3000 (data ICB, address data for Stage 1)

Inseize Message For MFR2 with Called Party and Category

In this example, the CSP performs the following:

1. Acknowledges the Seize message

2. Collects Called Party digits (Stage 1)

3. Changes to Group B signaling

4. Receives Group II signal (Stage 4)

5. Terminates the signaling sequence with a Backward B6
signal

Inseize Control Instructions

1. Generate seize ACK

2. Receive Stage N Address Data (Stage 1 Called Party)

3. Generate Call Processing Event of BWD R2 Compelled or Pulsed R2 Signal (A3)

4. Receive Stage N Address Data (Stage 4 Category)

5. Generate Call Processing Event of BWD R2 Compelled R2 Signal with Cycle Completion (B6)

6. Send Host ACK

7. Wait for Host Control

Inpulsing Parameters

Stage 1:

String Collection Method: Fixed Number of Digits
String Collection Data: 0xFF
(Keep requesting until no more digits are received)

Stage 4:

String Collection Method: Fixed Number of Digits
String Collection Data: 1 Digit

Inseize Message For MFR2 with Called Party, Calling Party, and Category

In this example, the CSP performs the following:

1. Sends an ACK to the Seize

2. Receives Called Party digits

3. Requests the Category digit and Calling Party digits

4. Receives digits (Stage 2)

5. Requests the remaining Called Party digits

6. Receives digits (Stage 3)

7. Changes to Group B

8. Receives Group II signal (Stage 4)

9. Terminates the signaling sequence with a Backward B6 signal.

Inseize Control Instructions

1. Generate seize ACK

2. Receive Stage N Address Data (Stage 1 Called Party)

3. Receive Stage N Address Data (Stage 2 Calling Party)

4. Receive Stage N Address Data (Stage 3 Called Party Remaining Digits)

5. Generate Call Processing Event of BWD Compelled R2 Signal (A3)

6. Receive Stage N Address Data (Stage 4 Category)

7. Generate Call Processing Event of BWD Compelled R2 Signal with Cycle Completion (B6)

8. Send Host ACK

9. Wait for Host Control

Inpulsing Parameters

Stage 1:

String Collection Method: Fixed Number of Digits
String Collection Data: 3 Digits

Stage 2:

String Collection Method: Fixed Number of Digits
String Collection Data: 0xFF
(Keep requesting until no more digits are received)

Stage 3:

String Collection Method: Fixed Number of Digits
String Collection Data: 4 Digits

Stage 4:

String Collection Method: Fixed Number of Digits
String Collection Data: 1 Digit

Outbound - Outseize Control for MFR2 with Called Party, Calling Party and Category Example

The call flow in the next example shows the events that occur at the CSP Signaling layer when the host sends a Route Control (or Outseize Control) message with the following ICBs:

1. Seize

2. Outpulse Stage 1

3. Send Host ACK

4. Wait for Host Control (with Answer Supervision)

5. Stage 1 digits are 862-3000 (data ICB, address data for Stage 1)

6. Stage 2 digits are 555-1212 (data ICB, address data for Stage 2)

7. Stage 4 digit is 2 (data ICB, address data for Stage 4