Can the system play the busy tone when the called party under the U1981 is busy?

(Versions later than V200R002C00) The possible reasons are: -The local call prefix is not correctly configured. When you call a local phone number, the busy tone indicates the local call prefix is not configured or incompletely configured. Ensure that the following mandatory parameters of the call prefix are configured correctly: call-type, digit-length, and prefix. -The called party's number does not exist. You can run the display voice pbxuser or display current-configuration command to check the existence of the called user or configuration integrity. For a POTS user, mandatory pbxuser parameters port and telno must be set correctly. For a SIPUE user, mandatory pbxuser parameters sipue and telno must be set correctly. -The called party has configured the call restriction services. Run the display voice pbxuser or display current-configuration command to verify that the called party has configured the call restriction services such as call rejection and selective call acceptance. If the fault persists, contact Huawei technical support personnel. (V200R002C00 and earlier versions) The possible reasons are: -The local call prefix is not correctly configured. When you call a local phone number, the busy tone indicates the local call prefix is not configured or incompletely configured. Ensure that the following mandatory parameters of the call prefix are configured correctly: enterprise, dn-set, centrex, prefix, call-type, maximum-length, and minimum-length, and the enterprise, dn-set, and centrex are consistent with planned information about the calling and called parties. -The called party's number does not exist. Run the display voice dialno or display current-configuration command to verify that the called party exists and the mandatory parameters of dialno including pbxuser, port, and dn-set are configured. -The called party has configured the call restriction services. Run the display voice dialno or display current-configuration command to verify that the called party has configured the call restriction services such as call rejection and selective call acceptance. If the fault persists, contact Huawei technical support personnel.

The possible reasons are: -The license is not correctly installed. To use the voice PBX function, apply for and install a commercial license. Run the display license state command to verify that the license status is normal. -No valid PBX user is configured. Ensure that the PBX device identifier and PBX user identifier are correctly configured. For details, see the Configure the PBX User in the voice configuration manual. -The DSP resources are insufficient. Run the display voice dsp-dimm state { slot/dsp-index | channel slot/dsp-index/channel } command. The idle item in the command output shows the remaining DSP resources. For example: NOTE: For V200R002C00 and earlier versions, run the display voice dsp-dimm state { slot/dsp-index | channel slot/dsp-index/channel } command to view the usage of DSP resources. For versions later than V200R002C00, run the display voice dsp state { slot/dsp-index | channel slot/dsp-index/channel } command to view the usage of DSP resources. The following uses a version earlier than V200R002C00 as an example: display voice dsp-dimm state 15/0 Symbol: 0-idle $-G.711 busy A-All busy W-Wastage X-fault @-IP loopback *-PCM loopback #-prohibited Channel NO. DSP channel state ---------------------------------------------------------------------- 0000-0049 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 0050-0099 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 0100-0149 00000 00000 00000 00000 00000 000 Total: 128 DSP channel 128 idle, 0 G.711 Busy, 0 All Busy, 0 Wastage, 0 Fault, 0 IP loopback, 0 PCM loopback, 0 prohibited In the preceding information, 128 idle indicates that 128 DSP channels are idle and the current DSP resources are sufficient. If the fault persists, contact Huawei technical support personnel.

The call waiting announcement is played by the carrier.

No.

On the U1900 series voice gateway, when an external call is transferred to a busy extension through the VU, the user hears an announcement indicating that the called party is busy. Then the switchboard plays the voice menu again to the calling party to prompt the user to dial another extension number or to dial 0 to transfer the call to a fixed phone. Note: Before configuring the service, collect customer requirements and contact online engineers for confirmation and guidance.