Update speech-services-quotas-and-limits.md

Author: sally-baolian

articles/ai-services/speech-service/speech-services-quotas-and-limits.md

@@ -163,9 +163,9 @@ The following quotas are adjustable for Standard (S0) resources. The Free (F0) r
 - Text to speech [maximum number of transactions per time period](#text-to-speech-quotas-and-limits-per-resource) for prebuilt neural voices and custom neural voices
 - Speech translation [concurrent request limit](#real-time-speech-to-text-and-speech-translation)
 
-Before requesting a quota increase (where applicable), ensure that it's necessary. Speech service uses autoscaling technologies to bring the required computational resources in on-demand mode. At the same time, Speech service tries to keep your costs low by not maintaining an excessive amount of hardware capacity.
+Before requesting a quota increase (where applicable), check your current TPS (transactions per second) and ensure that it's necessary to increase the quota. Speech service uses autoscaling technologies to bring the required computational resources in on-demand mode. At the same time, Speech service tries to keep your costs low by not maintaining an excessive amount of hardware capacity.
 
-Let's look at an example. Suppose that your application receives response code 429, which indicates that there are too many requests. Your application receives this response even though your workload is within the limits defined by the [Quotas and limits reference](#quotas-and-limits-reference). The most likely explanation is that Speech service is scaling up to your demand and didn't reach the required scale yet. Therefore the service doesn't immediately have enough resources to serve the request. In most cases, this throttled state is transient.
+Let's look at an example. Suppose that your application receives response code 429, which indicates that there are too many requests. Your application receives this response even though your workload is within the limits defined by the [Quotas and limits reference](#quotas-and-limits-reference). The most likely explanation is that Speech service is scaling up to your demand and didn't reach the required scale yet. Therefore the service doesn't immediately have enough resources to serve the request. In such cases, increasing the quota won’t help. In most cases, the Speech service will scale up soon, and the issue causing response code 429 will be resolved.
 
 ### General best practices to mitigate throttling during autoscaling