What gateways CISCO Business Edition 3000 uses for calls that go through the PSTN?

For all calls that go through the PSTN, the Cisco Business Edition 3000 uses the following gateways:

• Gateway built in to Cisco Media Convergence Server 7890C1 (MCS 7890-C1)
  
• Cisco 2901 Integrated Services Router (ISR2901)
  
• SPA8800
  
• SIP Trunk
  

Following Table shows the supported PSTN connections for Cisco Business Edition 3000.

The gateways serve as your connection to the PSTN; that is, the gateway allows all of your users to place and receive calls that go through the PSTN.

Note For Cisco ISR2901, ensure that you connect the T1/E1 PSTN connections to slot 0 only.

The Cisco ISR2901 that you use with Cisco Business Edition 3000 cannot be used for any IP routing functions other than those that are supported with Cisco Business Edition 3000.

The Cisco Unified Communications (UC) Technology Package License must be purchased with the order of Cisco ISR2901.

Note Install the Cisco Unified Communications Technology Package License before you configure any Voice features on the Cisco Business Edition 3000.

When you order a new router, it is shipped preinstalled with the software image and the corresponding permanent licenses for the packages and features that you specified. You do not need to activate or register the software before use. For more information, see http://www.cisco.com/en/US/docs/routers/access/ sw_activation/SA_on_ISR.html#wp1057952.

The Cisco MCS7890-C1 supports approximately 300 users and 400 devices.

For MCS78901-C1, you can create an internal gateway during the First Time Setup using the Cisco Business Edition 3000 First Time Setup Wizard.

For the Cisco MCS7890-C1 gateway, you can configure the general settings, such as the Media Resource IP address and the hostname. The settings that you configure for the gateway allows the gateway, the Cisco Business Edition 3000 server, and the phones to interact with each other for calls that go through the PSTN connection.

Note Ensure that you retain minimum of one T1/E1 PSTN connection configured with the internal gateway. The media transcoding and conferencing will not work properly if all the internal gateway connections are deleted.

Ensure that you assign a static IP address for the Cisco MCS7890-C1 internal gateway. However, there is no such restriction of a static IP address for ISR2901 gateways.

With Release 8.6.4 and later, you can associate each gateway with a site. However, the internal gateway, by default, is always associated with the central site of the system and cannot be modified. You can change the associated site for the gateway by editing the settings on the Connections > Device page using the Cisco Business Edition 3000 Administrative Interface.

You can associate the gateways with sites for the following PSTN connections:

• E1 PRI
  
• T1 PRI
  
• T1 CAS
  
• SIP Trunk
  
• SPA8800 (FXO)
  

Note The external gateways do not support E1 R2 connection type. Therefore, the E1 R2 connections are always associated with the internal gateway.  

You can configure the gateway for Cisco Business Edition 3000 by using one of the following methods:

• Through the Cisco-provided .xls data configuration file in the Cisco Business Edition 3000 First Time Setup Wizard (for initial deployment).

• On the Gateway page in the Cisco Business Edition 3000 First Time Setup Wizard (during initial deployment if you do not use the Cisco-provided .xls data configuration file).

• Under Connections > PSTN Connections > Add PSTN Connection > Connection Type > Device > Device > Add Device in Cisco Business Edition 3000 Administrative Interface (after initial deployment).

Tip After you add the Cisco ISR2901 gateway configuration to Cisco Business Edition 3000, you must update the gateway with the appropriate CLI commands.

Inbound and Outbound Called Party and Calling Party Transformations

Administrators can add or edit transformation patterns through the Cisco Business Edition 3000 Administrative Interface. Administrators can set digit discard instructions from the Outbound Call Routing section that appears under Advanced Settings in order to transform called party numbers for each PSTN connection. Digit discard instructions allow you to manipulate dialed digits or called party number for outgoing calls by appending or removing prefix digits. The default digit discard instructions at the egress connection down-size the called party number to contain the subscriber digits only. For outbound call routing to function properly, the called party number is up-sized based on the calling party location and routed based on class of service. The called party number is down-sized at the gateway egress.

Different service providers may use a different number of digits for the called number. For example, a service provider in North America may expect 11 digits for a local call and 8 digits for an international call. To support advanced routing cases, Cisco Business Edition 3000 allows you to customize called party transformation patterns for each connection. To route inbound calls to your internal extensions, you must remove the significant digits at the ingress gateway and append prefix digits to match the resulting number to an extension. By default, the significant digits that are retained in the calling party number is set to be equal to extension length and no prefix digits are added. To customize inbound call routing, Cisco Business Edition 3000 allows you to alter the significant digits and prefix digits for each connection.

You can edit the called party transformation and the calling party transformation patterns while configuring or editing the PSTN connection using the Cisco Business Edition 3000 Administrative Interface.