Background

The instructions on this page provide details of how to set up the Galaxy E1/T1 gateway card to act as a PRI Gateway between an E-MetroTel SIP PSTN Trunk and legacy 3^rd party E1/T1  gateway cards. In this scenario, The E1/T1 Gateway card connects via SIP to an E-MetroTel SIP PSTN Trunk and then acts as the PSTN Network side of a PRI connection to the legacy third party PBX.

This enables one element of E-MetroTel’s Green Migration of legacy systems by providing the customer with a cost effective transition from tariff-based PRI service from the PSTN to the more economical and efficient use of E-MetroTel SIP Trunks.

Prerequisites

• Access to the Galaxy T1/E1 gateway card Administration pages via Web browser.
• The username and password of the SIP trunk.
• Commercial grade PRI crossover cable

Connect T1 Cable

Connect PRI crossover cable to the Galaxy T1/E1 card on the E1/T1/J1 port and to the 3^rd party’s T1/E1 card.

1. Create a SIP Connection

The SIP side of the E1/T1 Gateway card will be connecting directly to an E-MetroTel PSTN SIP Trunk, with no UCX involved.

1.1 On the Partner Portal

1.2 On the E1/T1 Gateway Card

1.2.1 SIP Settings – Create a Profile

The example below establishes a SIP Server profile to the E-MetroTel US-based SIP Server with a Peer based connection as Profile 1. If Registration based connection is required, the Registration Details will be configured in section 2.1.

1. Navigate to Profiles / Profile 1 / SIP Settings page, Basic Settings tab.
2. For SIP Primary Server , enter sip-us.emetrotel.net.
3. For SIP Primary Server Port, enter 5060.
4. Click Save.

1.2.2 IP->Tel Route

1. Navigate to Profiles / IP->Tel Route page.
2. Click Add button to add a new route.
3. For Call Source Type, select SIP.
4. For Call Source, select the trunk number created in Step 4.

1.2.3 Tel->IP Route

1. Navigate to Profiles / Tel->IP Route page.
2. Click Add button to add a new route.
3. For Call Source Type, select PRI Trunk Port.
4. For Call Source, select Port-1.
5. For Call Purpose, select the trunk number created in Step 4.

2. Configure Trunk Settings

2.1 SIP Trunk

1. Navigate to Trunk Settings : SIP Trunk page.
2. Click Add to add a SIP trunk.
   • Trunk Number – select the next available number from the drop-down list.
   • Profiles – select the profile configured from the previous step.
   • Enable Registration – select Yes if you have configured the E-MetroTel SIP PSTN trunk for registration with a username and password.
   • SIP User ID – enter the username provided with your SIP trunk.
   • Authentication ID – enter the username provided with your SIP trunk.
   • Password – enter the password provided with your SIP trunk.
3. Click Save.

2.2 Port Settings

1. Navigate to Trunk Settings : Port Settings page.
2. For Timing Source, select Local.
3. Click Save.

2.3 PRI Settings

The Signaling Type must be configured as the Network Side, while the 3rd party PBX T1/E1 should remain configured as Customer Premises Equipment (CPE). Match the Switch Type that the 3rd Party PBX system is using. In North America that will often be National ISDN 2 (NI-2), while in Europe or other international locations it would likely be EuroISDN or Q.Sig.

1. Navigate to Trunk Settings : PRI Settings page.
2. Under the Action column, click on Edit
3. For Signaling Type, select Network Side
4. For Switch Type field, select National ISDN 2
5. Click Save