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Software for gateway for cisco voip phone

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Gateways use dial plans to access or call out to the PSTN, route groups, and group-specific gateways. The different gateways that are used within the Cisco IP Telephony Solutions have dial plans that are configured in different places:. Configure dial peers in the H.

The route group points to one or more gateways and can choose the gateways for call routing based on preference. The route group can serve as a trunk group by directing all calls to the primary device and then using the secondary devices when the primary is unavailable. One or more route lists can point to the same route group. All devices in a given route group share the same characteristics such as path and digit manipulation.

Route groups can perform digit manipulation that will override what was performed in the route pattern. Configuration information that is associated with the gateway defines how the call is actually placed. You can configure H. This means that before a call is placed to an H. Multiple clusters for inbound and outbound calls can share H. To find route groups or directory numbers that a specific gateway or gateway port is using, click the Dependency Records link that is provided on the Cisco CallManager Administration Gateway Configuration window.

The Dependency Records Summary window displays information about route groups and directory numbers that are using the gateway or port. To find out more information about the route group or directory number, click the route group or directory number, and the Dependency Records Details window displays. This section describes how Cisco voice gateways handle Cisco CallManager failover and failback situations.

A Cisco CallManager group can contain one, two, or three Cisco CallManagers that are listed in priority order for the gateway to use. Failback describes the process of recovering a higher priority Cisco CallManager when a gateway fails over to a secondary or tertiary Cisco CallManager. When a higher priority Cisco CallManager is ready, it gets marked as available again.

The gateway reverts to the highest available Cisco CallManager when all calls go idle or within 24 hours, whichever occurs first. The administrator can force a failback either by stopping the lower priority Cisco CallManager whereby calls get preserved, by restarting the gateway which preserves calls, or by resetting Cisco CallManager which terminates calls.

A new command, h tcp timeout seconds , specifies the time that it takes for the Cisco IOS gateway to establish an H. The Cisco IOS gateway shifts to the dial-peer statement with the next highest preference setting. Note To simplify troubleshooting and firewall configurations, Cisco recommends that you use the new voip-gateway voip bind srcaddr command for forcing H.

Without this command, the source address that is used in the setup might vary and depends on protocol RAS, H. Table provides an overview of the steps that are required to configure gateways in Cisco CallManager, along with references to related procedures and topics. Refer to the installation and configuration documentation for the model of gateway that you are configuring. Gather the information that you need to configure the gateway to operate with Cisco CallManager and to configure the trunk interface to the PSTN or external non-IP telephony device.

Refer to the voice feature software configuration documentation or Cisco IOS documentation for the model of gateway that you are configuring. Configure the dial plan for the gateway for routing calls out to the PSTN or other destinations.

This configuration can include setting up a route group, route list, and route pattern for the Gateway in Cisco CallManager or, for some gateways, configuring the dial plan on the gateway itself. Tip To get to the default web pages for gateway devices, you can use the IP address of that gateway. The web page for each gateway contains device information and the real-time status of the gateway.

Download this chapter. Understanding Voice Gateways. Gateway Control Protocols Gateway control protocols provide communication and control between Cisco CallManager and the voice gateway. You can connect any modem to the Cisco VG Voice Gateway Model Summary Table summarizes Cisco voice gateways that Cisco CallManager supports with information about the gateway control protocols, trunk interfaces, and port types.

POTS Loop start or ground start. Cisco series. Cisco Standalone Voice Gateways. Skinny Gateway Protocol. Cisco Catalyst Voice Gateway Modules. Cisco Catalyst Voice Gateway Switch. Cisco ICS Gateways. Install and configure the gateway or voice gateway module in the network.

On the gateway, perform any required configuration steps. Add and configure the gateway in Cisco CallManager Administration. For FXS ports, add directory numbers, if appropriate. Reset the gateway to apply the configuration settings. When the originating gateway sends a fax, the gateway establishes an initial voice call.

The terminating gateway detects the fax tone that the answering fax machine generates. The VoIP H. If the opposite end of the call acknowledges the T. When the fax transmission finishes, the call disconnects. Calls that are placed from IP phones over large WAN topologies can experience voice clipping when the called party goes off hook to answer the call. When H. With the FastStart feature, information that is required to complete a media connection between two parties gets exchanged during the H.

The connection experiences one roundtrip WAN delay during call setup, and the calling party does not receive voice clipping when the called party answers the call. Next, the H. The called endpoint accepts the H. When Cisco CallManager receives the FastStart element, it connects the media immediately and avoids the delays with the usual exchange of H. The called endpoint can refuse the H.

In this case, the Cisco CallManager handles the call as a normal call and uses the MTP for subsequent media cut-through. Note You cannot directly establish T. If an MTP is not available when the call is set up, the call continues without FastStart and with no supplementary services. When you set this parameter to True, the system rejects calls when no MTP is available.

Table summarizes Cisco voice gateways that Cisco CallManager supports with information about the gateway control protocols, trunk interfaces, and port types. Refer to your gateway documentation. Gateways use dial plans to access or call out to the PSTN, route groups, and group-specific gateways. The different gateways that are used within the Cisco IP Telephony Solutions have dial plans that are configured in different places:.

Configure dial peers in the H. The route group points to one or more gateways and can choose the gateways for call routing based on preference. The route group can serve as a trunk group by directing all calls to the primary device and then using the secondary devices when the primary is unavailable. One or more route lists can point to the same route group. All devices in a given route group share the same characteristics such as path and digit manipulation.

Cisco CallManager restricts the gateways that you can include in the same route group and the route groups that you can include in the same route list. For more information about routing, see the "Route Plan Overview" section. Route groups can perform digit manipulation that will override what was performed in the route pattern.

Configuration information that is associated with the gateway defines how the call is actually placed and can override what was configured in the route pattern. You can configure H. This means that before a call is placed to an H. Multiple clusters for inbound and outbound calls can share H. To find route groups or directory numbers that a specific gateway or gateway port is using, click the Dependency Records link that is provided on the Cisco CallManager Administration Gateway Configuration window.

The Dependency Records Summary window displays information about route groups and directory numbers that are using the gateway or port. To find out more information about the route group or directory number, click the route group or directory number, and the Dependency Records Details window displays. If the dependency records are not enabled for the system, the dependency records summary window displays a message.

This section describes how these Cisco voice gateways handle Cisco CallManager failover and fallback situations. A Cisco CallManager group can contain one, two, or three Cisco CallManagers that are listed in priority order for the gateway to use.

Fallback describes the process of recovering a higher priority Cisco CallManager when a gateway fails over to a secondary or tertiary Cisco CallManager. When a higher priority Cisco CallManager is ready, it gets marked as available again. The gateway reverts to the highest available Cisco CallManager when all calls go idle or within 24 hours, whichever occurs first. The administrator can force a fallback either by stopping the lower priority Cisco CallManager whereby calls get preserved, by restarting the gateway, which preserves calls, or by resetting Cisco CallManager, which terminates calls.

The command, h tcp timeout seconds , specifies the time that it takes for the Cisco IOS gateway to establish an H. The Cisco IOS gateway shifts to the dial-peer statement with the next highest preference setting. Note To simplify troubleshooting and firewall configurations, Cisco recommends that you use the new voip-gateway voip bind srcaddr command for forcing H.

Without this command, the source address that is used in the setup might vary and depends on protocol RAS, H. Using Cisco CallManager Administration, you can configure gateways as OnNet internal gateways or OffNet external gateways by using Gateway Configuration or by setting a clusterwide service parameter.

Used in conjunction with the clusterwide service parameter, Block OffNet to OffNet Transfer, the configuration determines whether calls can be transferred over a gateway. To use the same gateway to route both OnNet and OffNet calls, associate the gateway with two different route patterns. The system considers the calls that come to the network through that gateway OffNet or OnNet, respectively. See Table for description of these settings. When Call Classification is set to OffNet and the Allow Device Override check box is unchecked, the system considers the outgoing calls that use this route pattern as OffNet if configured as OnNet and check box is unchecked, then outgoing calls are considered OnNet.

The same gateway can be used to route both OnNet and OffNet calls by associating the gateway with two different route patterns: one OnNet and the other OffNet, with both having the Allow Device Override check box unchecked.

For outgoing calls, the outgoing device setting classifies the call as either OnNet or OffNet by determining whether the Allow Device Override check box is checked. In route pattern configuration, if the Call Classification is set as OnNet, the Allow Device Override check box is checked, and the route pattern is associated with an OffNet gateway, the system considers the outgoing call OffNet.

This setting identifies the gateway as being an external gateway. When a call comes in from a gateway that is configured as OffNet, the outside ring gets sent to the destination device. This setting identifies the gateway as being an internal gateway. When a call comes in from a gateway that is configured as OnNet, the inside ring gets sent to the destination device.

To configure all gateways to be OffNet external or OnNet internal , perform the following two steps:. Block transfer provides a way of restricting transfer between external devices, so fraudulent activity gets prevented. If a user tries to transfer a call on an OffNet gateway that is configured as blocked, a message displays on the user phone to indicate that the call cannot be transferred.

Table provides an overview of the steps that are required to configure gateways in Cisco CallManager, along with references to related procedures and topics. Refer to the installation and configuration documentation for the model of gateway that you are configuring.

Gather the information that you need to configure the gateway to operate with Cisco CallManager. Refer to the voice feature software configuration documentation or Cisco IOS documentation for the model of gateway that you are configuring. Configure the dial plan for the gateway for routing calls out to the PSTN or other destinations.

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