diff --git a/sdk/communication/azure-communication-administration/src/main/java/com/azure/communication/administration/PhoneNumberAsyncClient.java b/sdk/communication/azure-communication-administration/src/main/java/com/azure/communication/administration/PhoneNumberAsyncClient.java
index 211773d00db28..abfb2639d5daa 100644
--- a/sdk/communication/azure-communication-administration/src/main/java/com/azure/communication/administration/PhoneNumberAsyncClient.java
+++ b/sdk/communication/azure-communication-administration/src/main/java/com/azure/communication/administration/PhoneNumberAsyncClient.java
@@ -62,6 +62,7 @@
 public final class PhoneNumberAsyncClient {
     private final ClientLogger logger = new ClientLogger(PhoneNumberAsyncClient.class);
     private final PhoneNumberAdministrationsImpl phoneNumberAdministrations;
+    private final Duration DEFAULT_POLL_INTERVAL = Duration.ofSeconds(1);
 
     PhoneNumberAsyncClient(PhoneNumberAdminClientImpl phoneNumberAdminClient) {
         this.phoneNumberAdministrations = phoneNumberAdminClient.getPhoneNumberAdministrations();
@@ -779,7 +780,11 @@ Mono<Response<Void>> purchaseSearchWithResponse(String searchId, Context context
     public PollerFlux<PhoneNumberSearch, PhoneNumberSearch> beginCreateSearch(
         CreateSearchOptions options, Duration pollInterval) {
         Objects.requireNonNull(options, "'options' cannot be null.");
-        Objects.requireNonNull(pollInterval, "'pollInterval' cannot be null.");
+
+        if (pollInterval == null) {
+            pollInterval = DEFAULT_POLL_INTERVAL;
+        }
+
         return new PollerFlux<PhoneNumberSearch, PhoneNumberSearch>(pollInterval,
             createSearchActivationOperation(options),
             createSearchPollOperation(),
@@ -851,7 +856,7 @@ public PollerFlux<Void, Void> beginPurchaseSearch(String searchId, Duration poll
         Objects.requireNonNull(searchId, "'searchId' can not be null.");
         
         if (pollInterval == null) {
-            pollInterval = Duration.ofSeconds(5);
+            pollInterval = DEFAULT_POLL_INTERVAL;
         }
 
         return new PollerFlux<Void, Void>(pollInterval,