2023年5月15日 · CUBE supports a broad variety of DTMF relay methods for both In-band and Out-Of-Band (OOB) for the H.323 and Session Initiation Protocol (SIP) signaling protocols.

2013年6月6日 · DTMF play an important role in telephony solution as we all know. This document attempts to look at the detail traces from CUCM and gateway logs so as to understand DTMF interaction and how to troubleshoot them. Two key elements to this: 1. DTMF supported by the Phone or IVR or unity connection 2.

2022年8月15日 · The DTMF Relay feature allows CUBE to send dual-tone multi-frequency (DTMF) digits over IP. This chapter talks about DTMF tones, DTMF relay mechanisms, how to configure DTMF relays, and interoperability and priority with multiple relay methods. Feature Information for DTMF Relay Verifying DTMF Relay Feature Information for DTMF Relay

2015年11月16日 · SIP by default (if nothing else is explicity configured) uses RFC 2833 DTMF which is inband. Hence inband <-> OOb will invoke MTP from CUCM side. If you share the traces, we can see why MTP allocation is failing or why MTP is failing to do the DTMF conversion. Or easiest fix is to use KPML or SIP NOTIFY on the CUCM <-> CUBE leg for DTMF. ~Avinash

2015年7月16日 · DTMF就是双音多频，我们日常生活中拨打电话的过程中经常会用到，如拨打用户的分机号码，输入帐号和密码等。 而随着IP电话的大量使用如何实现传送DTMF成为IP电话中的一个技术问题。

2024年12月21日 · The DTMF Relay feature allows Cisco Unified Border Element (CUBE) to send dual-tone multifrequency (DTMF) digits over IP. This chapter talks about DTMF tones, DTMF relay mechanisms, how to configure DTMF relays, …

Implementing Interworking DTMF Cisco Unified Border Element (SP Edition) enables interworking between in-channel real-time transport protocol (RTP) signaling using the audio/telephone-event MIME type (RFC 2833) to and from out-of-band signaling using the SIP INFO or …

2008年7月21日 · Dual tone multi-frequency (DTMF) signaling is used on traditional analog plain old telephony service (PoTS) phones to send digits to the switching center for call...

2013年6月6日 · DTMF plays a key role in telephony solution. This document attempts to look at different DTMF transmission methods and how to troubleshoot these. This document looks at a few CUCM traces, gateway debugs and wireshark captures to get a detailed understanding of how DTMF is sent from each endpoint Two key elements to consider is DTMF negotiation: 1.

2019年5月16日 · DTMF tones are handled as follows: If you are making a point-to-point call, the Call Bridge will forward DTMF tones to the other participant. (this applies when DTMF tones are sent as part of the RTP audio or using RFC 2833)