> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/mtp2.md).

# MTP2 parameters

MTP2 link alignment, error rates and proving. 24 parameters.

## A

| Parameter                                 | Description                                                     |
| ----------------------------------------- | --------------------------------------------------------------- |
| **Align Error Rate Emergency Threshold**  | Alignment error rate monitor threshold for emergency condition. |
| **Alignment Error Rate Normal Threshold** | Alignment error rate monitor threshold for normal condition.    |

## C

| Parameter                                   | Description                                                                                        |
| ------------------------------------------- | -------------------------------------------------------------------------------------------------- |
| **Connection Mode**                         | The Connection Mode parameter defines the type of connection used in an SS7 system.                |
| **Cyclic Error: Nb of bytes to retransmit** | Maximum number of bytes available for retransmission under cyclical error correction type.         |
| **Cyclic Error: Nb of MSUs to retransmit**  | Maximum number of message units available for retransmission under cyclical error correction type. |

## D

| Parameter                       | Description                                     |
| ------------------------------- | ----------------------------------------------- |
| **Datalink state**              | Enabled: Datalink state is UP.                  |
| **Discard Frame In Congestion** | Discard the frame in a situation of congestion. |

## E

| Parameter            | Description                                                                                                  |
| -------------------- | ------------------------------------------------------------------------------------------------------------ |
| **Error Correction** | The type of error correction that is used: \* Normal error correction (default) \* Cyclical error correction |

## F

| Parameter              | Description                                                      |
| ---------------------- | ---------------------------------------------------------------- |
| **Flow Control End**   | Number of messages in the queue threshold to stop flow control.  |
| **Flow Control Start** | Number of messages in the queue threshold to start flow control. |

## L

| Parameter       | Description                            |
| --------------- | -------------------------------------- |
| **LSSU Length** | Link status signal unit (LSSU) length. |

## M

| Parameter                  | Description                                                                                                                     |
| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| **Max Alignment Attempt**  | Same as TTC JT-Q.703 allowable number of verification L                                                                         |
| **Max Frame Length**       | Maximum frame length for a message signal unit.                                                                                 |
| **Max Outstanding Frames** | Maximum frames to be sent to hdlc controller before receiving a confirmation.                                                   |
| **MTP2 T1 Timer**          | Alignment ready timer (same as TTC JT-Q.703 remote verification in progress timer.) Allowed values are from 100ms to 6500000ms. |
| **MTP2 T2 Timer**          | Not aligned timer (same as TTC JT-Q.703 wait for remote startup in progress timer).                                             |
| **MTP2 T3 Timer**          | Aligned timer (same as TTC JT-Q.703 initialization in progress timer).                                                          |
| **MTP2 T5 Timer**          | Sending SIB timer.                                                                                                              |
| **MTP2 T6 Timer**          | Remote congestion timer.                                                                                                        |
| **MTP2 T7 Timer**          | Excessive delay of acknowledgment timer.                                                                                        |

## N

| Parameter          | Description                  |
| ------------------ | ---------------------------- |
| **Normal Proving** | Normal proving period timer. |

## P

| Parameter             | Description                           |
| --------------------- | ------------------------------------- |
| **Proving Emergency** | Emergency proving period timer value. |

## S

| Parameter                            | Description                               |
| ------------------------------------ | ----------------------------------------- |
| **Signal Unit Error Rate Threshold** | Signal unit error rate monitor threshold. |

## T

| Parameter         | Description                                                                            |
| ----------------- | -------------------------------------------------------------------------------------- |
| **Timeslot Rate** | The Timeslot Rate parameter is used to indicate the data rate for timeslots on a line. |


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