一个解决方案是将语音回落到2G/3G，这叫CSFB（CS fallback），CSFB最大的缺点是需依赖于CS核心网和...
进入4G全IP时代,由于只有分组域PS,不再支持传统CS语音,于是提出了CSFB和VoLTE两种方案来支持语音业务。 CSFB,即CS FallBack,指当手机在4G网络中发起语音呼叫时从LTE网络回落到2/3G网络,借助2/3G网络的CS电路域来完成语音通话,通话结束后再返回4G LTE。 VoLTE,即Voice over LTE,指通过引入IMS,LTE网络直接提供基于...
To specify that the call fallback router keep a cache table by IP addresses of distances for several destination peers, use the call fallback map address-list command in global configuration mode. To restore the default values, use the no form of this command. call fallback map map ta...
Voice over LTE via Generic Access (VoLGA) A Whitepaper - August 2009 As the name implies it allows mobile devices to fall back to 2G or 3Gnetworks for circuit switched services such as voice calls. The main problems with thisapproach are longer call setup times which result in a ...
Commands: call fallback through called-number (dial-peer) Commands: caller-id (dial peer) through ccm-manager switchover-to-backup Commands: ccs connect (controller) through clear vsp statistics Commands: clid through cptone Commands: default (MGCP profile) through direct-inward-di...
• Voice fallback – given the importance and criticality of voice communications, CSPs have always looked at network architectures that allow them to have a fallback option. This strategy helps to mitigate problems like cell-to-cell handovers, roaming beyond coverage areas, and insufficient ...
EPS fallback enables a mobile phone to fall back from 5G to 4G LTE during a voice call set-up and data and voice traffic is carried over LTE while the call is active. This solution will be utilized in initial deployments.These and other methods to take advantage of VoLTE capabilities and...
MME, CS Fallback preventionMO Short Message deliveryvoice and SMS over IPreducing end-to-end latenciesIMS for non-VoIP servicesSummary This chapter contains sections titled: Introduction CS Fallback for Evolved Packet System SMS Over SGs Voice and Other CS Services than SMS Voice and SMS Over ...
Auto Register When Failover Controls the fallback duration. no: the fallback happens immediately and automatically. If the Proxy Fallback Intvl is exceeded, all the new SIP messages go to the primary proxy. yes: the fallback happens only when current r...
This keyword is available only for the tenant mode to allow it to fallback to the global configurations Command Default Early media cut-through for 180 responses with SDP is enabled. Command Modes SIP UA configuration (config-sip-ua) Voice class tenant configuration (config-class) Command ...