Huawei v200r001 user manual Fault Diagnosis and Troubleshooting of E1 Voice

User Manual - Configuration Guide (Volume 3)	Chapter 3
Versatile Routing Platform	E1 Voice Configuration

First perform voice configuration following the configuration procedure of Beijing-side router specified in section 3.4.2 step by step, and then configure DDR dialing in the corresponding port of ISDN PRI interface. Please refer to the relevant DDR sections for details.

2)Parameter configuration of Shanghai-side router

Configure DDR dialing in the port corresponding to Beijing-side router. Please refer to the relevant DDR sections for details.

3)Parameter configuration of Shenzhen-side router

Please perform voice configuration according to parameter configuration of Shenzhen-side router specified in section 3.4.2.

3.5 Fault Diagnosis and Troubleshooting of E1 Voice

Fault 1: Failure in establishing connection when switch-side subscriber calls router-side subscriber

Troubleshooting: please follow the following steps:

zFirst, use show running command to check that all the TSs are used when configuring signaling. Please make sure that the TSs the exchange uses is the same as the TSs configured for the router. Connection cannot be established, if the TSs that the exchange uses for outgoing calls are not used in the configuration of the router.

zIf there is no dial tone in the call duration, please check that the exchange has sent the outgoing trunk office code to the router and that office code and access number are configured for the telephone number on the router. Generally, connection cannot be established, if the exchange also sends the outgoing trunk office code and the telephone number on the router-side does not add the office code or is not configured with access number. You can either delete the outgoing trunk office code in the exchange-side configuration, or configure access number on router-side.

Fault 2: Using R2 signaling, the router fails to establish connection with subscribers on the exchange-side.

Troubleshooting: please follow the following steps:

First, use show running command to check that the trunk mode of the router corresponds with that of the exchange configuration. In other words, if the exchange- side is outgoing trunk, the router-side should be incoming trunk or bi-directional trunk; if the exchange-side is incoming trunk, the router-side should be out-going trunk or bi- directional trunk. If the trunk mode of the router-side is incoming trunk, the subscribers on router-side can only call in, and cannot call out.

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