SipExchange Feature Management

This section describes the features that are available to the subscribers of SipExchange as well as features that can be applied to a domain. It also describes how to manage the features.

Table of Contents

Domain Features

The following domain features are available on the current release of SipExchange. If you are using an earlier version of SipExchange, you may not have all the features listed below. Many of the features for a domain can be managed by system administrators from the SipExchange Console by selecting a domain and by clicking on the “Feature” icon ().  Other domain features can be managed directly from the domain administration screen.

SIP Gateway

The SipExchange server supports calls  to external domains to be routed through a SIP proxy gateway. By default, when a subscriber makes a call to a domain that is not managed by the SipExchange server, the call is routed by resolving the domain name using a DNS server and by routing the call to the resolved domain name. For example, if a subscriber makes a call to sip:somename@somedomain, by default, the SipExchange server resolves the domain name – somedomain and route the call to the resolved IP address of the somedomain server. This behavior can be changed and the call can be routed to specified SIP proxy gateway instead. This feature is useful when a domain has a specific SIP carrier that handles calls to external domains.

To add a gateway server address to a domain, using the instructions below:

  1. While creating a domain,  enter a value for the “Gateway Address” parameter. The gateway address is specified in the format – sip:server or sip:ipaddress where “server” is the name of the gateway server and ipaddress is the IP address of the gateway server.
  2. To remove the gateway server, just blank out the field.
  3. You can add a gateway any time after the creation of the domain by modifying the domain and by adding this field.

Multiple Appearance Address

The SipExchange server allows you to create SIP addresses that do not map to any particular subscriber. Instead, it maps to a list of subscribers. For example, you can create a SIP address called sip:operators@cafesip.org that maps to the subscribers -  sip:amit@cafesip.org, sip:becky@cafesip.org and sip:joe@cafesip.org. When an incoming call is received for the address sip:operators@cafesip.org and all the three subscribers are registered (logged in), the SipExchange server will route the call to all the three subscribers. The call will be routed to all the three subscribers. When one of them answers the call, the ringing stops on the other phones and the call between the calling party and the subscriber who answered the call is established. This features allows you to create call centers, operators groups, etc.

To add this feature to a domain, follow the steps below:

  1. Navigate to the list of domains. Click on the “Features” icon () to list the features of the domain. This list displays all the  features that are available for a domain.
  2. Select the “Configure”  icon –  for the feature – Multiple Appearance Address ( MAA). The resulting list will display all the multiple appearance addresses configured for the domain.
  3. To add a new address, click on the “Add” () icon located in the list header. A form is displayed. Edit the form parameters as described in the next bullet.
  4. For the address pattern field, enter a pattern string like “operator” (from the example above). You can also enter a regular expression instead of a string. Then add one or more addresses by entering either a SIP address or a subscriber user name (the subscriber must exist) and by clicking the “Add to List” button. You will see the subscriber/address in the list below. To remove a subscriber/address from the list, select one or more addresses and by clicking the “Remove Selected” button.
  5. Once the list has all the addresses you want, click on the “Done” button. This will take you back to the list. Click on the “Submit” button to submit the change.
  6. You can modify or delete the list any time by using the “Modify” () or the “Delete” () icons respectively.

Subscriber Features

The following subscriber features are available on  the current release of SipExchange. If you are using an earlier version of SipExchange, you may not have all the features listed below. All the subscriber features can be administered by clicking on the “Feature” icon () next to the subscriber listed on the subscriber list. When a subscriber feature is added, modified or deleted and the subscriber email is provisioned, an email is sent out to the subscriber. In many cases, the subscriber can modify some of the parameters of the feature from the SipExchange Portal. For example, for the call forwarding feature, the subscriber can provide the forwarding addresses.

Call Forwarding

This feature allows a subscriber to forward his/her calls to another SIP address. There are two types of call forwarding:

  1. Call forwarding (always): When this feature is enabled, all incoming calls to the subscriber is forwarded to the specified SIP address regardless of whether the user is registered with the SIP server or not.
  2. Call forwarding when not available: When this feature is enabled, an incoming call is forwarded to the specified SIP address when the subscriber is not registered (not logged in), when the subscriber does not answer the phone or when the subscriber is busy or denies an incoming call request.

SipExchange supports both types of call forwarding and the administrator can enable either types of call forwarding or both.

To administer call forwarding, execute the following steps:

  1. List the features of the subscriber by clicking on the “Features” ()  icon.
  2. Select the “Configure” button  () next to the Call Forwarding ( CFW) feature from the list.
  3. Enable either types of call forwarding or both.
  4. Optionally specify a call forwarding address(es). When specifying addresses, you can either specified a fully-qualified SIP address or a subscriber user id.
  5. Click on the Submit button to submit your changes.
  6. An email is sent out to the subscriber listing the change. You can change the content of the email using email templates. Click here for more details.

Call Screening

This feature allows a subscriber to screen incoming calls. The subscriber can maintain a list of addresses that he/she wants to block (not receive calls from) and a list of addresses that he/she forwards to another SIP address.

To administer call screening, execute the following steps:

  1. List all the features of the subscriber by clicking on the “Features” ()  icon.
  2. Select the “Configure” button  ()  next to the Call Screening ( CSC) feature from the list.
  3. Enable or disable call screening.
  4. Click on the Submit button to submit your changes.
  5. An email is sent out to the subscriber listing the change. You can change the content of the email using email templates. Click here for more details.
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