通过Python+AMI发起SIP外呼失败，Asterisk报通道未注册错误

我尝试用Python调用Asterisk管理接口（AMI）发起外呼，代码如下：

import socket

ami_host = 'localhost'
ami_port = 5038
ami_username = 'user'
ami_password = 'pass'
destination_number = 'dest_nubmber'
caller_id = 'caller_id'


def connect_to_ami():
    ami_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    ami_socket.connect((ami_host, ami_port))
    response = ami_socket.recv(4096).decode('utf-8')
    print(response)

    ami_socket.send(f'Action: Login\r\nUsername: {ami_username}\r\nSecret: {ami_password}\r\n\r\n'.encode('utf-8'))
    response = ami_socket.recv(4096).decode('utf-8')
    print(response)

    return ami_socket


def make_outgoing_call(destination, caller_id):
    ami_socket.send(f'Action: Originate\r\nChannel: SIP/sipus/{destination}\r\nExten: {destination}\r\nContext: from-internal\r\nCallerID: {caller_id}\r\nAsync: true\r\n\r\n'.encode('utf-8'))
    response = ami_socket.recv(4096).decode('utf-8')
    print(response)


def close_ami_connection():
    ami_socket.send('Action: Logoff\r\n\r\n'.encode('utf-8'))
    ami_socket.close()


ami_socket = connect_to_ami()
make_outgoing_call(destination_number, caller_id)
close_ami_connection()

代码运行无异常，但Asterisk日志中出现如下错误：

WARNING[3907] channel.c: No channel type registered for 'SIP'

解决方案 #

这个错误核心是Asterisk无法识别你指定的SIP通道类型，可从以下几个方向排查修复：

1. 检查SIP模块加载状态

   • 进入Asterisk控制台（执行asterisk -rvv），输入module show like sip查看模块状态：
     • 若显示chan_sip.so未加载，修改/etc/asterisk/modules.conf，添加load => chan_sip.so后重启Asterisk
     • 新版本Asterisk（13+）默认用PJSIP，需确认chan_pjsip.so已加载

2. 修正通道参数格式

   • 传统SIP（chan_sip）的正确Channel格式为SIP/{destination}@{trunk_name}，而非你代码中的SIP/sipus/{destination}
   • 若使用PJSIP，通道类型需改为PJSIP，格式为PJSIP/{destination}@{endpoint_name}，修正代码示例：

     def make_outgoing_call(destination, caller_id):
         # 替换为你的PJSIP端点名称
         ami_socket.send(f'Action: Originate\r\nChannel: PJSIP/{destination}@sipus\r\nExten: {destination}\r\nContext: from-internal\r\nCallerID: {caller_id}\r\nAsync: true\r\n\r\n'.encode('utf-8'))
         response = ami_socket.recv(4096).decode('utf-8')
         print(response)
     

3. 确认端点/中继配置有效性

   • 检查/etc/asterisk/sip.conf（传统SIP）或pjsip.conf（PJSIP）中，是否存在名为sipus的中继/端点配置，确保配置参数正确

内容的提问来源于stack exchange，提问作者Ace