In this section:

Client Side PRI enables the EdgeMarc to provide a standard Client-side ISDN interface. This is most often used with PRIs from the PSTN.

Before you Begin

Complete the steps in PRI Configuration Requirements.

Configuring the Client Side ISDN PRI (PRI/GW)

This section outlines how to configure the client side ISDN PRI.

To Configure the Client Side ISDN PRI (PRI/GW)

  1. Choose Network > ISDN > Client.

  2. Select the Enable PRI/GW services check-box and click Submit to activate fields on the Client Side ISDN PRI (PRI/GW) page.

  3. Configure settings using the information in the following table as a guide. When you have finished configuring settings, click Submit to make your changes take effect.

    Client Side ISDN PRI (PRI/GW) Parameters

    ItemDescription

    Enable PRI/GW service

    Select the PRI/GW service check-box to enable service.

    Select PRI line
    Choose a T1 line for ISDN PRI from the Select PRI line drop-down list. Valid range is 1-4 based on the number of T1 lines available on a given EdgeMarc platform.
    Trunk Switch TypeEnter the switch type that client-side ISDN PRI will be simulating. NI2 is selected by default. It is important that the switch type matches the Network-side switch type to which this interface is connected.
    D ChannelChoose a number from the D Channel drop-down list to use for Q.931 signaling.
    Enable Overlap Receive

    Note: This option is only available for EURO switch type and on the EdgeMarc 6000 platform.

    Enables Overlap Digit Receive from the network side. All digits are collected and sent enbloc in the outgoing INVITE message on the SIP side. All User to Network calls are sent enbloc, with sending complete IE added in the SETUP message.

    B Channel order descending (optional)

    Select the B Channel checkbox to change B channel order to descending (24-1). B channel ordering is ascending (1-24) by default when doing a call setup.

    Internal clockingSelect the Internal clocking checkbox to set the internal clocking mode for PRI. External clocking is used by default.

    International Prefix

    Enter a value in the International Prefix field.

    Jitter buffer (MS)

    Enter the jitter buffer value based on the IP network condition. Value is equal to or greater than 40 msecs. Default is 100 msecs.

    Jitter Type

    Choose the Jitter buffer type from the drop-down list:

    • Fixed—Default

    • Adaptive

    TX Gain to PRI Trunk from IP

    Choose a transmit gain value from the TX Gain to PRI Trunk from IP drop-down list.

    RX Gain from PRI Trunk to IP

    Choose a receive gain value from the RX Gain from PRI Trunk to IP drop-down list.

    SIP Server Settings

    Configure the following settings.

    Register with SIP server

    (Optional) Enable Register with SIP server if your SIP service provider requires endpoints to register with their service. The SIP Authentication name and password is used in the registration request.

    Register FROM Username (To IP network)

    Enter a name to register with the PRI/GW.

    This value is used in the SIP FROM field on calls from the PRI to the IP Network when the calling party name is not present on the PRI.

    SIP Authentication name

    (Optional) Enter the SIP authentication name used to authenticate the PRI/GW if the gateway registers with name defined in the Register FROM Username field.

    SIP password

    (Optional) Enter the SIP authentication password used to authenticate the PRI/GW if the gateway registers with the name defined in Register FROM Username field.

    Override FROM Display Name (To IP Network)

    Enter a name to override the system default DISPLAY name when sending SIP request to IP side.

    An Inbound call coming into PRI/GW from the remote PRI/T1 link is terminated on IP network. By default, the gateway uses this name as part of the DISPLAY name in SIP FROM header.

    Refer to Header Transformation page if you want to override FROM domain name. Click the Header Transformation link provided or choose VoIP > SIP > ALG and refer to Configuring VoIP SIP B2BUA Trunking.

    Disable sending CNAME

    Select the Disable sending CNAME checkbox so that the display name is not sent in FACILITY_IE as part of the Q931 SETUP message. The display name of calling party is sent using FACILITY_IE in SETUP message by default.

    This setting applies to NI2, 5ESS, and 4ESS PRI switch types.

    Override FROM Username (To PRI)

    Define FROM name to be sent to PRI. This FROM name overrides the SIP FROM coming from IP network if defined.

    Codec PreferenceSelect your codec preference from the Codec Preference drop-down list. When making a call, the codec is the first offered codec in the codec list. When receiving a call, if that codec is part of the negotiated codec list, that codec is used to encode and send voice packets.

    Use Preferred codec only

    Select the Use Preferred codec only check-box to use your selected codec preference as the only codec offered or responded to in the call setup. All other calls are rejected.

    Enable RTCP

    Select the Enable RTCP checkbox to enable RTCP support for voice media.

    Enable VADSelect the Enable VAD checkbox to enable Voice Activity Detection (VAD) support for voice media.

    Enable FAX/MODEM support

    When enabled, PRI will monitor FAX/MODEM tones in a voice call. If tone is detected, PRI will automatically change the voice call to FAX/MODEM data call. To enable T.38 FAX, define T.38 configuration.

    Note: This feature is only available on 4800 and 6000 platforms.

    Setup Message Channel ID typeChoose a type from the Setup Message Channel ID Type drop-down list. This will determine the format of the selected channel in the Channel ID Information Element of the outgoing Setup Message. If Channel Number is selected, then the format of the channel will be Channel Number. If Slotmap is selected, the indicated channel will be in a slotmap format. For incoming ISDN calls, the format indicated in the incoming SETUP message will be followed, regardless of this setting.
    Note: This feature is only available in the Japan trunk switch type.
    Setup Message Channel ID Preferred/ExclusiveChoose a type from the Setup Message Channel ID Preferred/Exclusive drop-down list. This setting will select either Preferred or Exclusive of the selected channel in the Channel ID Information Element of the outgoing Setup Message.
    Note: This feature is only available in the Japan trunk switch type.
    Enable Progress Indicator 8Enable this setting to add Progress Indicator 8 IE in Disconnect message and play local busy tone to the caller at PRI User side.
    Note: This feature is only available in the Japan trunk switch type.

    Define configuration for each PRI channel

    Configure each PRI channel:

    • Enable—Select the Enable check-box for each PRI channel you want to enable as part of the call. By default, all 23 channels are enabled.

    • Status—In the Status column, observe read-only status for a given PRI channel. The status can be Unknown, Idle, Busy, or Not-connected.