> 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/hardware.md).

# Hardware parameters

Adapters, boards, units and chassis. 75 parameters.

##

| Parameter           | Description                 |
| ------------------- | --------------------------- |
| **1+1 Backup Unit** | Backup unit for this group. |

## A

| Parameter        | Description                                                                                                         |
| ---------------- | ------------------------------------------------------------------------------------------------------------------- |
| **Adapter Type** | The Adapter Type parameter is used to specify the type of hardware device being created, when adding a new adapter. |

## C

| Parameter                               | Description                                                                     |
| --------------------------------------- | ------------------------------------------------------------------------------- |
| **Congestion Start Threshold**          | The threshold at which all SIP calls will be dropped to reduce memory usage.    |
| **Congestion Stop Threshold**           | The threshold at which new SIP calls will be accepted again.                    |
| **Critical Congestion Start Threshold** | The threshold at which all SIP messages will be dropped to reduce memory usage. |
| **Critical Congestion Stop Threshold**  | The threshold at which new SIP messages will be accepted again.                 |

## D

| Parameter       | Description                                                                                                              |
| --------------- | ------------------------------------------------------------------------------------------------------------------------ |
| **Description** | The Description parameter is an optional character string used to describe the purpose of a particular hardware adapter. |

## E

| Parameter                             | Description                                                                                                              |
| ------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ |
| **Enable HTTP access**                | Enable HTTP access to the unit using either eth0 or eth1 ports; get general information, such as memory usage.           |
| **Enable management port redundancy** | Enable management port redundancy by creating an ethernet bond using the two physical management ports.                  |
| **Enable Telnet access**              | Enable telnet access to unit using either eth0 or eth1 ports.                                                            |
| **Enable V.152 VBD**                  | Allows fax relay mode detection using V.152 VBD at the cost of a reduced call density.                                   |
| **Enable V.34 FAX**                   | Enable fax relay using V.34 (faster than V.17) at the cost of a reduced number of FAX channels (both for V.34 and V.17). |

## F

| Parameter                                  | Description                                                         |
| ------------------------------------------ | ------------------------------------------------------------------- |
| **Fixed density for AMR**                  | Total number of channels to reserve for codec AMR.                  |
| **Fixed density for ECHO high-latency**    | Total number of channels to reserve for codec ECHO high-latency.    |
| **Fixed density for ECHO low-latency**     | Total number of channels to reserve for codec ECHO low-latency.     |
| **Fixed density for ECHO medium-latency**  | Total number of channels to reserve for codec ECHO medium-latency.  |
| **Fixed density for EFR**                  | Total number of channels to reserve for codec EFR.                  |
| **Fixed density for EVRC**                 | Total number of channels to reserve for codec EVRC.                 |
| **Fixed density for FR**                   | Total number of channels to reserve for codec FR.                   |
| **Fixed density for G711 (10 ms packets)** | Total number of channels to reserve for codec G711 (10 ms packets). |
| **Fixed density for G711 (20 ms packets)** | Total number of channels to reserve for codec G711 (20 ms packets). |
| **Fixed density for G711 (5 ms packets)**  | Total number of channels to reserve for codec G711 (5 ms packets).  |
| **Fixed density for G722.2**               | Total number of channels to reserve for codec G722.2.               |
| **Fixed density for G723**                 | Total number of channels to reserve for codec G723.                 |
| **Fixed density for G726 (10 ms packets)** | Total number of channels to reserve for codec G726 (10 ms packets). |
| **Fixed density for G726 (20 ms packets)** | Total number of channels to reserve for codec G726 (20 ms packets). |
| **Fixed density for G728**                 | Total number of channels to reserve for codec G728.                 |
| **Fixed density for G729A**                | Total number of channels to reserve for codec G729A.                |
| **Fixed density for G729EG 11.8 Kbps**     | Total number of channels to reserve for codec G729EG 11.8 Kbps.     |
| **Fixed density for G729EG 8 Kbps**        | Total number of channels to reserve for codec G729EG 8 Kbps.        |
| **Fixed density for ILBC 13 Kbps**         | Total number of channels to reserve for codec ILBC 13 Kbps.         |
| **Fixed density for ILBC 15 Kbps**         | Total number of channels to reserve for codec ILBC 15 Kbps.         |
| **Fixed density for QCELP13**              | Total number of channels to reserve for codec QCELP13.              |
| **Fixed density for QCELP8**               | Total number of channels to reserve for codec QCELP8.               |
| **Fixed density for SMV**                  | Total number of channels to reserve for codec SMV.                  |
| **Fixed density for T38**                  | Total number of channels to reserve for codec T38.                  |

## G

| Parameter                    | Description                                                                                                                          |
| ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| **Graceful Upgrade Timeout** | The Graceful Upgrade Timeout parameter is used to set a maximal delay for calls to terminate normally before an adapter is upgraded. |

## I

| Parameter                          | Description                                                       |
| ---------------------------------- | ----------------------------------------------------------------- |
| **Increase SIP Stack Allowed RAM** | Assign more memory to the SIP stack.                              |
| **Is N+1 Backup**                  | Indicates if this unit is a backup unit.                          |
| **ISDN primary CPU load**          | Percentage of ISDN stacks to load on the primary CPU of the unit. |

## L

| Parameter                      | Description                                                                                                          |
| ------------------------------ | -------------------------------------------------------------------------------------------------------------------- |
| **Load CAS on secondary CPU**  | Load the CAS stack on the secondary CPU (default is primary CPU).                                                    |
| **Load ISUP on secondary CPU** | Load the ISUP stack on the secondary CPU (default is primary CPU).                                                   |
| **Load IUA on secondary CPU**  | Load the IUA stack on the secondary CPU (default is primary CPU).                                                    |
| **Load LAPD on secondary CPU** | Load the LAPD stack on the secondary CPU (default is primary CPU).                                                   |
| **Load M2PA on secondary CPU** | Load the M2PA stack on the secondary CPU (default is primary CPU).                                                   |
| **Load M2UA on secondary CPU** | Load the M2UA stack on the secondary CPU (default is primary CPU).                                                   |
| **Load M3UA on secondary CPU** | Load the M3UA stack on the secondary CPU (default is primary CPU).                                                   |
| **Load SIP on secondary CPU**  | Load the SIP stack on the secondary CPU (default is primary CPU).                                                    |
| **Location**                   | The Location parameter is an optional character string used to identify the physical location of a hardware adapter. |

## M

| Parameter                          | Description                                                                                |
| ---------------------------------- | ------------------------------------------------------------------------------------------ |
| **Maximum CAS call burst**         | Maximum CAS call burst over the rate limit on this unit (0 -> use call rate limit value)   |
| **Maximum CAS calls per second**   | Maximum number of CAS calls per second to allow on this unit (0 is unlimited)              |
| **Maximum ISDN call burst**        | Maximum ISDN call burst over the rate limit on this unit (0 -> use call rate limit value)  |
| **Maximum ISDN calls per second**  | Maximum number of ISDN calls per second to allow on this unit (0 is unlimited)             |
| **Maximum SIP call burst**         | Maximum SIP call burst over the rate limit on this unit (0 -> use call rate limit value)   |
| **Maximum SIP calls per second**   | Maximum number of SIP calls per second to allow on this unit (0 is unlimited)              |
| **Maximum SS7 call burst**         | Maximum SS7 call burst over the rate limit on this unit (0 -> use call rate limit value)   |
| **Maximum SS7 calls per second**   | Maximum number of SS7 calls per second to allow on this unit (0 is unlimited)              |
| **Maximum total call burst**       | Maximum total call burst over the rate limit on this unit (0 -> use call rate limit value) |
| **Maximum total calls per second** | Maximum number of total calls per second to allow on this unit (0 is unlimited)            |

## N

| Parameter                      | Description                                                                                                  |
| ------------------------------ | ------------------------------------------------------------------------------------------------------------ |
| **N+1 Backup Unit**            | The backup unit for this group.                                                                              |
| **Number of calls per period** | Number of dropped calls due to congestion (per period) before reporting the adapter's status as 'congested'. |

## P

| Parameter           | Description                                                                                                                                  |
| ------------------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| **Period Duration** | Period for which an adapter's status is reported as 'congested' when the number of calls dropped due to congestion has passed the threshold. |
| **Primary Unit**    | Primary unit of the 1+1 group                                                                                                                |

## S

| Parameter                   | Description                                                                                          |
| --------------------------- | ---------------------------------------------------------------------------------------------------- |
| **Serial**                  | The Serial parameter is used to define a product serial number, when creating a new hardware device. |
| **SIP Dynamic memory size** | Amount of memory allocated for SIP dynamic buffers.                                                  |
| **SIP Event memory size**   | Amount of memory allocated for SIP events.                                                           |
| **SIP Signal memory size**  | Amount of memory allocated for SIP signals.                                                          |
| **SIP Signal pool sizes**   | Available size of signals in the pool, for emaple: sig1,sig2,sig3,sig4,sig5,sig6,sig7,sig8.          |

## T

| Parameter                 | Description                                                                                                                                                                                                                                             |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Target State**          | The Target State parameter is used to set the live state of a hardware adapter.                                                                                                                                                                         |
| **TDM Companding**        | Codec used on the TDM bus between devices on the unit (DSPs, VOIP, TMS, ...).                                                                                                                                                                           |
| **TDM Lines Type**        | Type of physical connector present on the unit: \*UNKNOWN: Unknown physical line interface type \*OC3\_STM1: OC3 or STM1 physical line interface (optical connector) \*DS3: DS3 physical line interface \*E1\_T1\_J1: E1, T1 or J1 physical line interf |
| **Timer Start Threshold** | The threshold at which all SIP messages will be dropped to reduce memory usage.                                                                                                                                                                         |
| **Timer Stop Threshold**  | The threshold at which SIP timers will be set back to RFC2161 values.                                                                                                                                                                                   |

## U

| Parameter            | Description                                                    |
| -------------------- | -------------------------------------------------------------- |
| **Use system names** | Enable the use of system names to identify adapter interfaces. |

## V

| Parameter           | Description                                                                      |
| ------------------- | -------------------------------------------------------------------------------- |
| **VOIP Codec Mode** | Method to calculate VOIP channels distribution according to available resources. |


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