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Cisco 300-815 Exam (page: 6)
Cisco Implementing Advanced Call Control and Mobility Services (CLASSM)
Updated on: 15-Feb-2026

Viewing Page 6 of 32
300-815 PDF 245 Questions

A customer has multisite deployments with a globalized dial plan. The customer wants to route PSTN calls via the gateway assigned to each site.
Which two actions will fulfill the requirement? (Choose two.)

  1. Create one global route list for PSTN calls that points to one global PSTN route group.
  2. Create a route group which has all the gateways and associate it to the device pool of every site.
  3. Assign one route group as a local route group in the device pool of the corresponding site.
  4. Create one route group for each site and one global route list for PSTN calls that point to the local route group.
  5. Create a hunt group and assign it to each side route pattern.

Answer(s): A,C


Reference:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/8x/uc8x/dialplan.html



An engineer is troubleshooting local ringback on a Cisco SIP gateway. The gateway is not ignoring the SIP 180 response with SDP from the service provider, and the far end device is sending the 180 with SDP to play ringback from the IP address specified in the SDP.
Which configuration change must be made on the gateway to resolve the issue?

  1. Router(config-sip-ua)# no disable-early-media 180
  2. Router(conf-voi-serv)# no disable-early-media 180
  3. Router(conf-voi-serv)# disable-early-media 180
  4. Router(config-sip-ua)# disable-early-media 180

Answer(s): D


Reference:

https://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/ vrht_d2_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1452642



An engineer must configure a Cisco UCM hunt list so that calls to users in a line group are routed to the first idle user and then the next.
Which distribution algorithm must be configured to accomplish this task?

  1. broadcast
  2. top down
  3. longest idle time
  4. circular

Answer(s): C


Reference:

https://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/4_0_1/ccmcfg/b03lngrp.html



An engineer has temporarily disabled toll fraud prevention for SIP line calls on a Cisco CME12.6x and must enforce security and toll fraud prevention for the SIP line side on Cisco Unified CME. Which configuration must be used to start this process?

  1. voice service voip enable ip address trust list
  2. voice service voip ip address trusted list
  3. voice service voip ip address trusted authenticate
  4. voice service voip enable ip address trust authentication

Answer(s): B


Reference:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/manual/ cmeadm/cmetoll.html



A company has an SRST gateway running an IOS XE image. The company plans to enable the IPv6 addressing companywide. To enable the IPv6 in a unified SRST gateway to support SIP phones, what are two supported supplementary features for an IPv6 fallback scenario? (Choose two.)

  1. three-way conference
  2. secure SIP lines
  3. T.38 fax relay
  4. transcoding
  5. SIP trunk

Answer(s): A,C


Reference:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/admin/sccp_sip_srst/configuration/ guide/SCCP_and_SIP_SRST_Admin_Guide/srst_sip_isr4000.html



Which action is correct with respect to toll fraud prevention configuration in the Cisco Unified Communications Manager Express?

  1. Configure Direct Inward Dial for Incoming ISDN Calls with overlap dialing.
  2. Configure IP Address Trusted Authentication for Incoming VoIP Calls.
  3. Configure the command no ip address trusted authenticate under "voice service voip".
  4. Enable Secondary Dial tone on Analog and Digital FXO Ports.

Answer(s): B


Reference:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/manual/ cmeadm/cmetoll.html#concept_ECC4F4E7ED0F45C594B703EEF34762F2



The administrator sees the voice register pool 1 command in your Cisco UCME configuration.
Which configuration is occurring in this section?

  1. configuration for a single SIP phone
  2. configuration items common for all SIP phones
  3. configuration for a pool of SIP phones (similar to device pool on Cisco UCM)
  4. configuration for SIP registrar service

Answer(s): C


Reference:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cusrst/admin/sccp_sip_srst/configuration/ guide/SCCP_and_SIP_SRST_Admin_Guide/srst_setting_up_using_sip.html



A company wants to use a Cisco phone system without the need for a local generic server. It is maximum 30 phones using a vendor-independent, industry-standard call protocol.
What is the first command that must be entered to add this type of phone when registering a Cisco phone to this device?

  1. ephone 3
  2. voice register pool 3
  3. voice register sip ephone 3
  4. voice register ephone 3

Answer(s): B



Viewing Page 6 of 32



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