System Identifier (SID)

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| System Identifier Description | System Identifier Assignment Guideline | System Identifier Status |

The SID resource has been sunset by Telecom Decision CRTC 2025-209 and is no longer available for assignment

System Identifier Description

A SID was a 15-bit identifier (0-32767) transmitted from a base station over a radio interface, that identifies a mobile system conforming to one of several Telecommunications Industry Association (TIA) wireless standards (e.g., AMPS/TDMA/CDMA). The SID was used by mobile stations to determine whether the system through which they are communicating was a system to which they subscribe or whether they are considered by the system to be roamers. SID codes were for Wireless Service Providers (WSP) and Wireless Competitive Local Exchange Carriers (WCLEC) in Canada that operated ANSI-41-based wireless networks, or that provided roaming into ANSI-41-based wireless networks from other wireless networks.

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System Identifier Assignment Guideline

The Canadian System Identifier (SID) Reference Document can be obtained from the CRTC website by clicking here.

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System Identifier Status

The SID resource has been sunset by Telecom Decision CRTC 2025-209 and is no longer available for assignment.

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