


Twilio call keeping and recovery: Meeting mode with independent call leg processing
Jul 25, 2025 pm 08:42 PM1. 使用Twilio會議(Conference)實現(xiàn)通話保持與恢復(fù)(推薦)
在Twilio中,最簡便且推薦的通話保持與恢復(fù)方式是利用其強大的會議(Conference)功能。當(dāng)通話參與者加入會議后,可以靈活地控制每個參與者的狀態(tài),包括將其置于保持狀態(tài)并播放保持音樂。
1.1 將參與者置于保持狀態(tài)
要將會議中的某個參與者置于保持狀態(tài),您需要更新該參與者的資源。通過設(shè)置hold參數(shù)為True,并指定holdUrl來播放保持音樂,即可實現(xiàn)此功能。
操作步驟:
- 確保您的通話參與者已加入一個Twilio會議。
- 使用Twilio客戶端庫對特定的會議參與者資源發(fā)起更新請求。
- 在更新請求中,將hold參數(shù)設(shè)置為True。
- 通過holdUrl參數(shù)提供一個URL,該URL指向您希望播放的保持音樂(例如,一個MP3文件或返回TwiML的端點)。
PHP代碼示例:
<?php // 引入Twilio SDK require __DIR__ . '/vendor/autoload.php'; use Twilio\Rest\Client; // 您的Twilio賬戶SID和Auth Token $accountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為您的Account SID $authToken = "your_auth_token"; // 替換為您的Auth Token // 創(chuàng)建Twilio客戶端實例 $client = new Client($accountSid, $authToken); // 假設(shè)會議SID和參與者SID已知 $conferenceSid = "CFXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為您的會議SID $participantSid = "CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為要保持的參與者SID try { $participant = $client ->conferences($conferenceSid) ->participants($participantSid) ->update([ "hold" => true, "holdUrl" => "http://www.myapp.com/hold_music.mp3" // 替換為您的保持音樂URL ]); echo "參與者 " . $participant->callSid . " 已成功置于保持狀態(tài)。\n"; } catch (Exception $e) { echo "將參與者置于保持狀態(tài)失敗: " . $e->getMessage() . "\n"; } ?>
1.2 恢復(fù)參與者通話
當(dāng)您希望恢復(fù)被保持的參與者時,只需再次更新該參與者資源,將hold參數(shù)設(shè)置為False即可。
操作步驟:
- 使用Twilio客戶端庫對之前被保持的會議參與者資源發(fā)起更新請求。
- 在更新請求中,將hold參數(shù)設(shè)置為False。
PHP代碼示例:
<?php // 引入Twilio SDK require __DIR__ . '/vendor/autoload.php'; use Twilio\Rest\Client; // 您的Twilio賬戶SID和Auth Token $accountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為您的Account SID $authToken = "your_auth_token"; // 替換為您的Auth Token // 創(chuàng)建Twilio客戶端實例 $client = new Client($accountSid, $authToken); // 假設(shè)會議SID和參與者SID已知 $conferenceSid = "CFXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為您的會議SID $participantSid = "CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; // 替換為要恢復(fù)的參與者SID try { $participant = $client ->conferences($conferenceSid) ->participants($participantSid) ->update([ "hold" => false ]); echo "參與者 " . $participant->callSid . " 已成功恢復(fù)通話。\n"; } catch (Exception $e) { echo "恢復(fù)參與者通話失敗: " . $e->getMessage() . "\n"; } ?>
2. 處理獨立呼叫腿(Call Legs)的通話保持與恢復(fù)
如果您不使用會議功能,而是直接管理兩個獨立的呼叫腿(例如,一個呼入腿和一個呼出腿),實現(xiàn)通話保持會相對復(fù)雜。當(dāng)您更新其中一個呼叫腿以將其重定向到其他TwiML時,另一個呼叫腿通常會因為通話完成而掛斷。
2.1 保持通話的挑戰(zhàn)與對策
挑戰(zhàn): 當(dāng)您將通話的一方(例如,主叫方)重定向到保持音樂TwiML時,另一方(例如,被叫方)會認(rèn)為主叫方已完成通話并掛斷。
對策: 為避免另一方掛斷,您需要在原始的
TwiML示例:
<Response> <Dial>+CUSTOMER_NUMBER</Dial> <Redirect>https://example.com/hold</Redirect> </Response>
在上述TwiML中,如果
2.2 實現(xiàn)通話保持與恢復(fù)的復(fù)雜邏輯
對于獨立的呼叫腿,實現(xiàn)保持和恢復(fù)的完整流程需要更精細(xì)的控制:
保持通話:
- 當(dāng)您決定將某個呼叫腿置于保持狀態(tài)時,可以將其Enqueue(入隊)到一個Twilio隊列中。
- 被入隊的呼叫腿將播放隊列的等待音樂(如果配置了)。
TwiML示例(用于入隊):
<Response> <Enqueue waitUrl="http://www.myapp.com/hold_music_queue.xml"> myQueue </Enqueue> </Response>
waitUrl指向的TwiML將用于播放等待音樂。
恢復(fù)通話:
- 當(dāng)您需要恢復(fù)被保持的呼叫腿時,需要更新另一個呼叫腿(例如,之前未被保持的客服代表的呼叫腿)。
- 將該呼叫腿Dial(撥號)到之前入隊的隊列中。Twilio會自動將隊列中最老的呼叫腿連接到當(dāng)前撥號進來的呼叫腿。
TwiML示例(用于撥號入隊):
<Response> <Dial> <Queue>myQueue</Queue> </Dial> </Response>
這種方法雖然可行,但相比使用
總結(jié)
在Twilio中實現(xiàn)通話保持與恢復(fù),強烈推薦使用會議(Conference)功能。它提供了簡潔、強大的API來管理會議參與者,包括將其置于保持狀態(tài)和恢復(fù),并且能夠輕松集成保持音樂。雖然也可以通過精細(xì)控制獨立的呼叫腿來實現(xiàn)類似功能,但這需要更復(fù)雜的TwiML邏輯和狀態(tài)管理,增加了開發(fā)和維護的復(fù)雜性。在設(shè)計您的Twilio通話應(yīng)用時,優(yōu)先考慮利用會議功能將大大簡化開發(fā)流程并提升可靠性。
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