Introduction
Use the PRI User-Side Table window to configure the Edge 8300 to provide a standard client-side ISDN interface. This is most often used with PRIs from the PSTN.
The window contains a list of the PRI lines (0 to 3). To configure user-side settings for a specific PRI line, click on the arrow to the left of the PRI-Line number. The window expands to show the configuration options for the selected line.
Use the following table to review information on the configuration options. These options apply to user-side configuration in either E1 or T1 PRI deployments.
| Parameter | Description |
|---|---|
| PRI-Line | (READ ONLY) |
| T1 or E1-Trunk-Switch-Type | Select the switch type that client-side ISDN PRI will be simulating. NI2 is selected by default for T1 and EURO for E1. The switch type must match the Network-side switch type to which this interface is connected. |
| T1 or E1-D-Channel-Number | Choose a number from the D Channel drop-down list to use for Q.931 signaling. |
| Internal-Clocking | Set this option to True to enable internal clocking mode for PRI. External clocking is used by default. |
| Device-Name | If caller information is not available in a call coming into the PRI trunk from the remote PRI link, enter a device name for the SIP FROM user. |
| Enable-SIP-Update | When set to True, the SIP update is shown in the Supported Header. |
| B-Channel-Order-Descending | Set this option to True to change the B channel order to descending. By default, when setting up a call, B channel ordering is ascending. |
| International-Prefix | Enter the value to prepend as an international prefix to the dialed number when a call of type international is received from the PRI. No action is taken if the field is empty or a prefix is already part of the called number. |
| Jitter-Buffer | Enter the jitter buffer value based on the IP network condition. Value is equal to or greater than 40 ms. The default is 100 ms. The range is 40-200ms. |
| Jitter-Buffer-Type | Choose the Jitter buffer type from the drop-down list:
|
| Register-With-SIP-Server | Set this option to True if your SIP service provider requires endpoints to be registered. The SIP Authentication name and password is used in the registration request. |
| Override-From-Enable | Set this option to True to enable overriding SIP FROM user name. The options are True and False. |
| Override-FROM-User-Name | Enter a name to override the system default DISPLAY name when sending an SIP request to the IP side. A call coming in Network-side PRI/GW from the PBX is terminated on the IP network. By default, the gateway uses the PRI callerID in the FROM field of the SIP INVITE message when terminating the call on the IP side. If the callerID is absent, the gateway uses the specified internal name. |
| SIP-Authentication-Name | If the gateway registers with the name defined in the Register FROM Username field, enter the SIP authentication name used to authenticate the PRI/GW. |
| SIP-Authentication-Password | Define the SIP authentication password used to authenticate the PRI/GW in case GW registers with the name defined in the 'Register FROM Username' field. |
| Override-FROM-Display-Name | When sending SIP requests to the IP side, enter a name to override the DISPLAY name. An Inbound call coming into PRI/GW from the remote PRI/T1 link is terminated on the IP network. By default, the gateway uses this name as part of the DISPLAY name in the SIP FROM header. |
| Disable-Facility-IE | The Caller's Name is carried in FACILITY IE but sometimes in DISPLAY IE. When true, the caller's name is carried in the DISPLAY IE. |
| Codec-Preference | Select the preferred codec. When making a call, this codec will be the first one offered. When receiving a call, if this codec is part of the negotiated codec list, it will be used to encode and send voice packets. |
| Use-Preferred-Codec-Only | Set this option to True to use your selected codec preference as the only codec offered or responded to in the call setup. All other calls are rejected. |
| Handle-PROGRESS | This is relevant when making inbound calls from PRI to PBX. A PROGRESS message is sent from PBX in response to a PROG indicator in the SETUP message. However, some PBX sends this message regardless. Since SETUP did not ask for PROGRESS, this message is ignored by default. Set this option to True to handle this PBX behavior. This will ensure that PROGRESS is handled and an appropriate SIP message is generated. |
| Enable-RTCP | Set this option to True to enable RTCP support for voice media. False is default. |
| RTCP-Interval | Specifies the interval at which the RTCP report is sent. The default is 5, and the range is from 1-30 sec. |
| Display-IE-Enable | Set this option to True to display the info in the DISPLAY IE, regardless of facility IE settings. |
| Enable-VAD | Set this option to True to enable Voice Activity Detection (VAD) support for voice media. |
| Disable-RFC2833-Outbound | When set to True, for any OB call, PRI will not advertise the support for RFC2833 when making a call to IP. The options are True and False. The default is False. |
| Disable-RFC2833 | With DSP-based PRI solutions, RFC2833 (out-of-band tone-events) is enabled (true) by default. The options are True and False. The default is False. |
| RFC2833-Event-Payload | DTMF packets will send with configured payload type when any DTMF key pressed. The values range from 100-101. The default value is 100. |
| Channel-Release-Time | The value indicates the time in hours after which the PRI client-side channel will be pre-empted for a new call if no other channel is free. Default is disabled if the parameter is absent or the value is 0. The default is 0 hours. |
| T200-Timer-Value | Value of T200 Timer in Milliseconds for ISDN signaling. Added for interoperability with Ancient Merlin-Magic PBX. A value of 1110 works well with Merin-Magic. Must be used with caution. The range is 1010 to 2000ms. |
| T200-Retry-Count | Value of T200 timer retries before declaring error. Added for interoperability with Ancient Merlin-Magic PBX. A value of 5 works well for Merlin-Magic. Must be used with caution. The range is from 3 to 10. |
| Enable-FAX-Modem-Support | PRI will monitor FAX/MODEM tones in a voice call when set to True. If a tone is detected, PRI will automatically change the voice call to FAX/MODEM data call. To enable T.38 FAX, define the T.38 configuration. |
| PRI-Gateway-Virtual-IP | This field is read-only, with a value of 169.254.1.50. The value represents the SIP Gateway internal IP address used for SIP signaling to and from the SWe Edge internal SIP-SERVER-IP to support PRI calls. |
| Service-Message-Protocol-Rev-1 | Displays the ISDN maintenance message with two revs. Select one of the options based on PBX support. The default is false. |
| DTMF-Max-Time | Default is 0. Range 0 or 50-300. |
| Enable-Port-Admin | An internal variable is defined if a remote party has asked a specific b-channel to be turned off when sending a service maintenance message. This variable should not be defined by any external config. It is applicable in fractional T1/PRI configurations. The options are True and False. The default is True. |
| Bring-B-Channel-Down | Define to bring down all active calls if d-channel on PRI goes down. One-off config for a customer to interop. The options are True and False. The default is False. |
| Send-B-Channel-Restarts | Define to force B-channel to restart SERVICE message when D-channel connects. One-off config for customer Interop. The options are True and False. The default is False. |
| Enable-Early-Media | This is relevant when making outbound calls from PBX to PRI. After sending ALERT with Early Media indication, PRI sends CONNECT to the PBX when enabled. Some PBXs will not cut-through media if CONNECT is not sent after Early Media, and so if a PBX user is trying to access an IVR, DTMF from the PBX user will not be sent to IVR. |
| Force-Local-Ringback | Set this option to False to disable forcing local ringback. The default is True. |
In addition to the previous settings, click the B-Channel-Setting link to open a Channel Table window for the PRI line. The table contains a row for each B-channel and displays status information for each channel. To configure a specific B-channel, click on the arrow to the left of the B-Channel number. The window expands to show the configuration options for the selected channel.
Use the following table to review information on the configuration options.
| Parameter | Description |
|---|---|
| B-Channel | (READ-ONLY) |
| Enable | Select True for each channel you want to enable during the call. The options are True and False. The default is True. |
| Enable-Port-Admin | Select False to send a maintenance message to disable this channel on the remote side. If the remote decides to disable the channel, this status will reflected as False. The options are True and False. The default is True. |
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