CÓDIGO ORGANICO DE LA NIÑEZ Y ADOLESCENCIA TITULO IV DEL DERECHO A VISITAS

ISDN Primary Rate Interface (PRI) is becoming the most cost-effective solution for accessing enhanced voice capabilities. All inbound and outbound services that are usually obtained by using different trunk types (such as INWATS, OUTWATS, FX, Tie, and DID) can be accessed with a single ISDN trunk; as a result, the number of system trunks can be reduced by 10 to 15 percent. On outbound calls, the system requests the required service from the Network. The trunk takes on the requested characteristics for the duration of the call.

The PRI card provides two ISDN links and provides the same functionality as the two link ISDN Network Gateway. The PRI card has the Bearer Capabilities (BC) of Speech (voice) and 3.1 kHz audio. The card also transports the BCs of rate-adapted 56 kbs data and unrestricted 64 kbs data transparently through the system.

The PRI card supports the following ISDN network services:

• Calling Party Number (CPN) - This number substitutes the calling station number on outgoing calls for purposes of network identification and call back.

• Calling Name ID (CNID) - This ID is the incoming calling name delivery per NA DMS100 custom specification or National ISDN-3 (NI3).

• Calling Line Identification Presentation (CLIP) - The Calling Party Number can be provided to the ISDN Network for outgoing calls or provided to the PRI card from the ISDN Network for incoming calls. This information is passed onto the system and can be used for database applications such as screen pops and for inclusion in SMDR records. • Calling Line Identification Restriction (CLIR) - This feature allows users to prevent their

telephone number from being presented to the called party.

• Partial PRI Links - The SX-200 PRI card will support COs that provide this feature. • Direct Dial-In (DDI) - DDI is an ISDN option that allows direct access to a line behind a

system through a unique directory number. This allows the dialed digits of an incoming ISDN call to be presented to the system. All ISDN trunks are treated as Dial-In trunks; the CO always sends digits to the system.

• Call-By-Call Service Selection (CBC) - This feature allows telephone users to select the ISDN network services that they wish to use on a per call basis.

• DID Calling Party Number Forwarding - Outgoing CPN delivers the calling party’s DID number to the Network when the call has been identified as a call from a device with an associated DID number instead of delivering the main directory number associated with the system.

• Equal Access to Interexchange Carriers - The system provides a carrier access code to the ISDN Network Gateway which identifies to the Central Office which Interexchange Carrier is to receive the call. The system outpulses a digit string which includes a carrier access code, followed by an identification number, followed by the called number. • Min/Max - This feature allows a customer to control incoming and outgoing call traffic.

Minimums are assigned to ensure that a particular type of call (such as INWATS) always has a set number of lines available. Maximums are assigned to limit certain types of calls, i.e., OUTWATS. This ensures that resources are not used up by a single type of call. Different Min/Max databases can be created for different times of the day or for special occasions such as telethons or infomercials.

• Auto Min/Max - This feature provides user programmable time-of-day automatic control of Min/Max parameters.

• NFAS (Non-Facility Associated signaling) - NFAS allows you to use a single D-channel to handle the signaling requirements for a group of PRI links that all use the same Protocol. This feature eliminates the need to purchase a D-channel for each link. NFAS is mainly for North America.

• D-Channel Backup - This feature is used for signaling to establish and maintain the circuit, and to send user data. D-channel Backup provides an alternate D-channel for calls related to NFAS. If the active D-channel fails, the system switches to the backup D-channel to support call processing. This functionality is mainly for North America. NFAS is required in order to program D-channel Backup.

• Q.SIG - This feature provides the ability to connect Q.SIG compatible PBXs from different vendors together to form a private network and to connect the SX-200 to the SX-2000 LIGHT system or any other Q.SIG compatible PBX. Q.SIG features that are supported include Calling Name for incoming calls, Message Waiting Indication, Call Transfer, Call Diversion, and Path Replacement.

• Remote LAN Access - This feature provides LAN access to the wide area network (WAN) for both incoming and outgoing calls through LAN servers (routers or bridges).

• Multiple Variants and Configurations - This feature provides the ability to run multiple protocol variants and program multiple configurations on the two links of the PRI Gateway through the IMAT application. The option to run multiple variants allows you to connect the PRI Gateway to two different CO switches. The option to run multiple configurations allows you to program Network-side on one link of the PRI Gateway and program User-side on the other link of the PRI Gateway. For more information on programming multiple variants and configurations, refer to the IMAT online Help.