> 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/tmedia-documentation/configuration/creating-an-n-1-patch-panel.md).

# Creating an N+1 Patch Panel

> **Applies to:** Tmedia 3.0, 3.2, 3.3

One or two N+1 patch panels can be used to provide backup protection for the system.

**To create an N+1 Patch Panel:**

1- Click **Hardware Units** in the navigation panel

![Nplus1 0 A](https://docs.telcobridges.com/w/images/b/b0/Nplus1_0_A.png)

2- Click **Create New Unit**

![Nplus1 1 A](https://docs.telcobridges.com/w/images/3/34/Nplus1_1_A.png)

3- Enter the name of the patch panel.

* Enter the serial number of the patch panel.
* Select **N+1 Patch Panel** as the type.
* Enter the location of the device.
* Enter a meaningful description for the device.
* Click **Create**

![Nplus1 2 A](https://docs.telcobridges.com/w/images/b/bb/Nplus1_2_A.png)

NOTE: If your system is configured with a main and a backup patch panel, repeat steps 2 and 3 to add another N+1 patch panel. The following image shows a backup N+1 panel being added.

![Nplus1 2 B](https://docs.telcobridges.com/w/images/1/15/Nplus1_2_B.png)

4- Verify that the newly added N+1 patch panel(s) appear in the **N+1 Patch Panels** list.

![Nplus1 3 A](https://docs.telcobridges.com/w/images/5/5e/Nplus1_3_A.png)

**Path**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]
```

**Parameters (text)**

```
/configurations/@[configuration_name]/hardware_units/@[hardware_name]
description              = ""
graceful_upgrade_timeout = 0
is_np1_backup            = false
location                 = ""
name                     = "@[hardware_name]"
serial_number            = "@[serial_number]"
target_state             = "Enabled"
tdm_line_type            = "E1_T1_J1"
type                     = "N+1 Patch Panel"

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/advanced_parameters
casr2_cpu0_load                = 50
dsp_reserved_for_play_record   = 1
enable_http                    = true
enable_mgmt_port_redundancy    = true
enable_telnet                  = true
enable_v34                     = false
enable_vbd_autoswitch          = false
isdn_primary_cpu_load_percent  = 50
load_cas_on_secondary_cpu      = false
load_isdn_on_secondary_cpu     = false
load_iua_on_secondary_cpu      = true
load_lapd_on_secondary_cpu     = true
load_m2pa_on_secondary_cpu     = true
load_m2ua_on_secondary_cpu     = true
load_m3ua_on_secondary_cpu     = true
load_sip_on_secondary_cpu      = true
sip_cong_start_thresh          = 2
sip_cong_stop_thresh           = 4
sip_critical_cong_start_thresh = 1
sip_critical_cong_stop_thresh  = 3
sip_dynamic_mem_size           = "0 KB"
sip_event_mem_size             = "0 KB"
sip_extra_mem                  = true
sip_reduced_timer_start_thresh = 4
sip_reduced_timer_stop_thresh  = 5
sip_signal_mem_size            = "0 KB"
sip_signal_sizes               = ""
tdm_companding                 = "aLaw"
voip_codec_AMR                 = 0
voip_codec_ECHO_H              = 0
voip_codec_ECHO_L              = 0
voip_codec_ECHO_M              = 0
voip_codec_EFR                 = 0
voip_codec_EVRC                = 0
voip_codec_FR                  = 0
voip_codec_G711_5              = 0
voip_codec_G711_10             = 0
voip_codec_G711_20             = 0
voip_codec_G722_2              = 0
voip_codec_G723                = 0
voip_codec_G726_10             = 0
voip_codec_G726_20             = 0
voip_codec_G728                = 0
voip_codec_G729A               = 0
voip_codec_G729EG_8            = 0
voip_codec_G729EG_11_8         = 0
voip_codec_ILBC13              = 0
voip_codec_ILBC15              = 0
voip_codec_mode                = "Mixed Mode"
voip_codec_QCELP8              = 0
voip_codec_QCELP13             = 0
voip_codec_SMV                 = 0
voip_codec_T38                 = 0

/configurations/@[configuration_name]/hardware_units/@[hardware_name]/call_rate_limiting
maximum_cas_call_burst         = 0
maximum_cas_calls_per_second   = 0
maximum_isdn_call_burst        = 0
maximum_isdn_calls_per_second  = 0
maximum_sip_call_burst         = 0
maximum_sip_calls_per_second   = 0
```

**Parameters (json)**

```
{
  "advanced_parameters" : {
    "casr2_cpu0_load" : 50,
    "dsp_reserved_for_play_record" : 1,
    "enable_http" : true,
    "enable_mgmt_port_redundancy" : true,
    "enable_telnet" : true,
    "enable_v34" : false,
    "enable_vbd_autoswitch" : false,
    "isdn_primary_cpu_load_percent" : 50,
    "load_cas_on_secondary_cpu" : false,
    "load_isdn_on_secondary_cpu" : false,
    "load_iua_on_secondary_cpu" : true,
    "load_lapd_on_secondary_cpu" : true,
    "load_m2pa_on_secondary_cpu" : true,
    "load_m2ua_on_secondary_cpu" : true,
    "load_m3ua_on_secondary_cpu" : true,
    "load_sip_on_secondary_cpu" : true,
    "sip_cong_start_thresh" : 2,
    "sip_cong_stop_thresh" : 4,
    "sip_critical_cong_start_thresh" : 1,
    "sip_critical_cong_stop_thresh" : 3,
    "sip_dynamic_mem_size" : "0 KB",
    "sip_event_mem_size" : "0 KB",
    "sip_extra_mem" : true,
    "sip_reduced_timer_start_thresh" : 4,
    "sip_reduced_timer_stop_thresh" : 5,
    "sip_signal_mem_size" : "0 KB",
    "sip_signal_sizes" : "",
    "tdm_companding" : "aLaw",
    "voip_codec_AMR" : 0,
    "voip_codec_ECHO_H" : 0,
    "voip_codec_ECHO_L" : 0,
    "voip_codec_ECHO_M" : 0,
    "voip_codec_EFR" : 0,
    "voip_codec_EVRC" : 0,
    "voip_codec_FR" : 0,
    "voip_codec_G711_5" : 0,
    "voip_codec_G711_10" : 0,
    "voip_codec_G711_20" : 0,
    "voip_codec_G722_2" : 0,
    "voip_codec_G723" : 0,
    "voip_codec_G726_10" : 0,
    "voip_codec_G726_20" : 0,
    "voip_codec_G728" : 0,
    "voip_codec_G729A" : 0,
    "voip_codec_G729EG_8" : 0,
    "voip_codec_G729EG_11_8" : 0,
    "voip_codec_ILBC13" : 0,
    "voip_codec_ILBC15" : 0,
    "voip_codec_mode" : "Mixed Mode",
    "voip_codec_QCELP8" : 0,
    "voip_codec_QCELP13" : 0,
    "voip_codec_SMV" : 0,
    "voip_codec_T38" : 0
  },
  "call_rate_limiting" : {
    "maximum_cas_call_burst" : 0,
    "maximum_cas_calls_per_second" : 0,
    "maximum_isdn_call_burst" : 0,
    "maximum_isdn_calls_per_second" : 0,
    "maximum_sip_call_burst" : 0,
    "maximum_sip_calls_per_second" : 0,
    "maximum_ss7_call_burst" : 0,
    "maximum_ss7_calls_per_second" : 0,
    "maximum_total_call_burst" : 0,
    "maximum_total_calls_per_second" : 0
  },
  "description" : "",
  "graceful_upgrade_timeout" : 0,
  "is_np1_backup" : false,
  "location" : "",
  "name" : "@[hardware_name]",
  "serial_number" : "@[serial_number]",
  "target_state" : "Enabled",
  "tdm_line_type" : "E1_T1_J1",
  "type" : "N+1 Patch Panel",
  "bondings" : {
  },
  "cas_stacks" : {
  },
  "ethernet_ports" : {
  },
  "ip_interfaces" : {
  },
  "isdn_stacks" : {
  },
  "iua_stacks" : {
  },
  "m2pa_stacks" : {
  },
  "m2ua_stacks" : {
  },
  "mtp2_stacks" : {
  },
  "rtp_port_ranges" : {
  },
  "sctp_stacks" : {
  },
  "tdm_line_interfaces" : {
  },
  "tunnels" : {
  },
  "virtual_ports" : {
  }
}
```

### List of Parameters

* [Name](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/name/README.md)
* [Serial](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/serial/README.md)
* [Type](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/adapter-type/README.md)
* [Location](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/location/README.md)
* [Description](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/parameter-description/README.md)
* [Target State](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/target-state/README.md)


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