Update service-limits.md

add ATS information for Job Router

Author: marche0133

articles/communication-services/concepts/service-limits.md

@@ -182,6 +182,18 @@ The following timeouts apply to the Communication Services Calling SDKs:
 
 For more information about the voice and video calling SDK and service, see the [calling SDK overview](./voice-video-calling/calling-sdk-features.md) page or [known issues](./known-issues.md).
 
+## Job Router
+When sending or receiving a high volume of requests, you might receive a ```ThrottleLimitExceededException``` error. This error indicates you're hitting the service limitations, and your requestes will be dropped until the token of bucket to handle requests replenished after a certian time.
+
+Rate Limits for Job Router:
+
+|Operation|Scope|Timeframe (seconds)| Limit (number of requests) | Timeout in seconds|
+|---------|-----|-------------|-------------------|-------------------------|
+|General Requests|Per Resource|10|1000|10|
+
+### Action to take
+If you require to send a volume of messages that exceed the rate limits, email us at [email protected].
+
 ## Teams Interoperability and Microsoft Graph
 Using a Teams interoperability scenario, you'll likely use some Microsoft Graph APIs to create [meetings](/graph/cloud-communications-online-meetings).