diff --git a/specification/metrics/semantic_conventions/system-metrics.md b/specification/metrics/semantic_conventions/system-metrics.md
index 05733dcad06..dd1443797a1 100644
--- a/specification/metrics/semantic_conventions/system-metrics.md
+++ b/specification/metrics/semantic_conventions/system-metrics.md
@@ -118,19 +118,22 @@ perf counter (similar for Writes)
**Description:** System level network metrics.
-| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
-|----------------------------------------|-------------------------------------------------------------------------------|---------------|---------------------------------------------------|------------|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| system.network.dropped\[1\] | Count of packets that are dropped or discarded even though there was no error | {packets} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.packets | | {packets} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.errors\[2\] | Count of network errors detected | {errors} | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.io | | By | Counter | Int64 | device | (identifier) |
-| | | | | | direction | transmit, receive |
-| system.network.connections | | {connections} | UpDownCounter | Int64 | device | (identifier) |
-| | | | | | protocol | tcp, udp, [etc.](https://en.wikipedia.org/wiki/Transport_layer#Protocols) |
-| | | | | | state | [e.g. for tcp](https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Protocol_operation) SHOULD be one of: close, close_wait, closing, delete, established, fin_wait_1, fin_wait_2, last_ack, listen, syn_recv, syn_sent, time_wait. A stateless protocol MUST NOT set this attribute. |
+| Name | Description | Units | Instrument Type ([*](README.md#instrument-types)) | Value Type | Attribute Key | Attribute Values |
+|-----------------------------------------|-------------------------------------------------------------------------------|---------------|---------------------------------------------------|------------|---------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| system.network.dropped\[1\] | Count of packets that are dropped or discarded even though there was no error | {packets} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.packets | | {packets} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.errors\[2\] | Count of network errors detected | {errors} | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.io | | By | Counter | Int64 | device | (identifier) |
+| | | | | | direction | transmit, receive |
+| system.network.connections (deprecated) | | {connections} | UpDownCounter | Int64 | device | (identifier) |
+| | | | | | protocol | tcp, udp, [etc.](https://en.wikipedia.org/wiki/Transport_layer#Protocols) |
+| | | | | | state | If specified, SHOULD be one of: close, close_wait, closing, delete, established, fin_wait_1, fin_wait_2, last_ack, listen, syn_recv, syn_sent, time_wait. A stateless protocol MUST NOT set this attribute. |
+| system.network.tcp.connections | Count of TCP connections | {connections} | UpDownCounter | Int64 | device | (identifier) |
+| | | | | | state | SHOULD be one of: close, close_wait, closing, delete, established, fin_wait_1, fin_wait_2, last_ack, listen, syn_recv, syn_sent, time_wait. A stateless protocol MUST NOT set this attribute. |
+| system.network.udp.connections | Count of UDP connections | {connections} | UpDownCounter | Int64 | device | (identifier) |
1 Measured as: