C1011 Paging Control Stack

Paging Control Stack

The Paging Control Stack is a Linux software package that controls a response paging network, supporting multiple, channels, zones and base stations. It supports unicast and multicast communications, secure provisioning and management, and 5-second message delivery. The paging control stack is a generational update to the M41XX and M42XX paging controllers, and is specifically optimized for first-responder primary dispatch.

  • Ultra-reliable solution for critical messaging
  • 5-second message delivery, confirmation, and response
  • User read confirmation and multiple-choice responses
  • AES-128 message encryption with key management
  • SNPP, SMTP, TAP, and SDP interfaces
  • Asterisk telephony platform integration
  • Active and passive standby redundancy
System Architecture

The C1011 Paging Control Stack is a Linux software distribution that includes three microservice modules, io, core, and rzone. It installs on a commercial server running the CentOS 7 or RHEL 7 operating system.

The io module serves messaging interfaces. The core module maintains the subscriber database and message queues. The real-time rzone module handles the RF air interface, connecting to one or more base stations and providing one or more zones of Reflex coverage.

The paging control stack implements several messaging interfaces, including SDP, SMTP, SNPP, TAP, and a specialized IVR interface for use with Asterisk, for telephone paging. It also implements several socket interfaces for communicating with remote base stations.

Messaging Interfaces

SDP: The Sparkgap Dispatch Protocol is a socket-based text protocol for sending messages to pagers and groups of pagers, and receiving acknowledgements and responses as they happen in real time. It also includes socket-level connection health monitoring, group membership reports, and other features relevant to primary dispatch and critical communications.

SMTP: The Simple Mail Transfer Protocol is a push-based protocol for sending email. The Paging Control Stack is a Mail Transfer Agent (MTA) meaning it can send and receive email as both an SMTP client and server. Using this interface, email addresses are assigned to pagers, which may send and receive email.

SNPP: The Simple Network Paging Protocol allows socket clients to send messages to pagers (RFC 1861). The Paging Control Stack supports level 3 SMTP, which conveys responses back to the client.

TAP: The Telocator Alphanumeric Protocol allows clients to send messages to pagers using a serial port.

Asterisk: The Asterisk Interface supports a lightweight IVR socket protocol (crs-ivr) that can integrate into the Asterisk telephony platform as a custom application. Together, the interface and application permit telephone callers to send pager messages using their telephone dialpad.

The Paging Control Stack is available as downloadable software, along with a perpetual licence based on the total number of nodes supported by the system. The part number for the base license is CRS-C1081-BASE-NODES where NODES specifies the number of supported nodes.

An existing system may be expanded with one or more expansion licenses. The part number for the expansion license is CRS-C1081-EXPANSION-NODES where NODES specifies the number of additional supported nodes.