Outgoing Sender

An outgoing sender (out-sender or OS) is a type of sender in the 5XB telephone switch. The term outgoing was used to differentiate it from other types of senders used in other switches, among them the terminating sender in the 1XB, which was actually an incoming receiving circuit.

The outgoing sender (OS) accepts a called number from a marker, and pulses that information outward towards a distant telephone switch. This information can be sent in a number of signaling types, depending on the communication needs of the distant exchange. In the 5XB, outgoing senders can also be used to pulse the calling party's telephone number forwards to a CAMA office for the creation of billing records, and to pulse information back in to the originating office through an incoming register for tandem operation.

Some outgoing senders have the ability to delete and replace an arbitrary number of digits before outpulsing.

Types of Outgoing Senders

• MF Outgoing Sender (OS MF) - Pulses digits forward using MF signaling.
• Dial Pulse Outgoing Sender (OS DP) - Pulses digits forwarding using dial pulses.
• Revertive Pulse Outgoing Sender (OS RP) - Pulses five revertive pulse selections forward which directs panel selectors to the called number.
• PCI Outgoing Sender (OS PCI) - Pulses digits forward using Panel Call Indicator (PCI) signaling.