关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 关注微信公众号《课帮忙》查题 公告:维护QQ群:833371870,欢迎加入!公告:维护QQ群:833371870,欢迎加入!公告:维护QQ群:833371870,欢迎加入! 2021-04-14 To access BRI service, it is necessary to subscribe to an ISDN phone line. To access BRI service, it is necessary to subscribe to an ISDN phone line. 答案: 查看 举一反三 We forgot to _______ the computer to the phone line. ISDN中BRI接口(2B+D)D信道的速率为()。 用户接入ISDN网络有两种接口PRI和BRI。 ISDN常用的有两种接口结构,分别是BRI和 The longest back boundary line is also called________. A: The side line B: The short service line C: The lone service singles. D: The doubles’ line