Configuring a TDM DS3 (IMG 1010 only) Software 10.5.0

Description:

A DS3 line (also known as a T-3) is an ultra high-speed connection capable of transmitting data at rates up to 45 Mbps. A DS3 line is equal to approximately 672 (28 Spans * 24 DSO's) regular voice-grade telephone line. A DS3 line is comprised of 28 T1 lines, each operating at total signaling rate of 1.544 Mbps. Use this pane to configure a DS3 Interface. Once the TDM DS3 object is created the individual DS1's will need to be configured. See TDM Spans (DS3) in Related Topics on how to accomplish this.

 

Accessing this Pane:

Dialogic IMG EMS -> Logical IMG -> Physical IMG -> Facility -> TDM DS3

 

Maximum Objects:

1 per Physical IMG

 

Related Topics:

DS3_Configure Profile - 10.5.x

 

Procedure:

  1. Right-click Facility and select New TDM DS3.

  2. The Bearer ID:0 Pane appears. See Below

 

ClientView DS3 Bearer Pane

sc_tdm_ds3_10-5-0.png

 

Field Descriptions:

DS3 Framing Type:

M13 - A type of framing that multiplexes individual DS1 channels to a DS3 Channel

CBIT (default) - M13 Framing with CBIT bit stuffing for synchronous operation.

 

Component ID:

Bearer - Automatically Populated and cannot be changed

 

Interface ID:

Automatically populated with ID:0

 

Line Length:

Line length is selectable from a drop down menu. The selections are

The next few fields below relate to DS3 Loopback testing. See DS3 Diagnostics from Related topics for more information.

 

 

 

DS3 and DS1 FEAC Responses ( Far End Alarm and Control Channel Responses):

Enabling this option allows loop-back to be configured from any “far-end” equipment connected on the other end of the line. These can be used to send and receive loop up codes and information from the far end T3 device. You can enable and disable through a drop down menu in this field.

 

FEAC alarms are sent from the remote end device towards the local device by means of the C bit in the Sub-frame. When a failure is declared on the remote end unit this is how it notifies the near end unit. Some FEAC Codes are shown below

 

Alarm Codes

DS3 Equip. Failure(Service Affecting)

011001

DS3 LOS

001110

DS3 OOF

000000

DS3 AIS RCV

010110

DS3 IDLE RCV

011010

DS3 EQUIQ FAIL(NON-SERVICE AFFECT)

001111

COMMON EQUIP. FAIL (NSA)

011101

MULTIPLE DS1 LOS

010101

DS1 EQUIP FAIL

000101

SINGLE DS1 LOS

011110

DS1 EQUIP FAIL(NON-SERVICE AFFECT)

000011

 

FEAC Codes can be sent to put remote end equipment in loopback mode. There is a specific FEAC code to request ALL DS1's be put in loopback. There are also specific FEAC codes for each individual span offset. The local IMG can request that the far end put all DS1's in loopback (Send FEAC code to put ALL DS1's in loopback on remote node).  If only one DS1 offset (for example offset 14) needs to be put in loopback then the local IMG CAN send the code value that corresponds to offset 14. Below are a few codes to accomplish this.

 

Loopbacks

Line loopback activate

000111

Line loopback de-activate

011100

DS3 Line

011011

 

DS3 Loopback Mode:

 

All DS1s Loopback Mode:

 

Note: Following the request to put DS1 offset 14 in loopback, you CANNOT make another request for loopback on another span without first taking span 14 out of loopback.

 

Monitoring Fields:

DS3 Status:

Gives a status of DS3. (Inservice, Out of Service, Receiving Red, etc)

 

FEBE Count (Far End Block Errors Count):

Are used to indicate framing or CP bit parity errors from the transmitter.

 

DS3 Loopback Status:

Shows Status of DS3 Loopback Mode.

 

All DS1 loopback Status:

Shows Status of ALL DS1 Loopback Mode.

 

Next Topic:

DS3_Configure_Profile - 10.5.x