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  • VoIP Project - Supporting Voice Services
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VoIP TSC Training

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Upcoming Unit Technical Support Contact (TSC) VoIP Training Sessions: 

August 5 (Tuesday)                   2-3PM                     FAC328

Topics will include:

  • An overview of the new support model
  • Troubleshooting phones
  • Service changes after deployment – adds, moves, changes, etc.
  • Networking configuration and troubleshooting (requires an understanding of TSC tools)
  • Common questions/issues
  • Future capabilities

Troubleshooting and Data Updates

Troubleshooting a Voice Services VoIP phone that is not working

Basic service is supported by the TSC.  Troubleshooting resources: troubleshooting instructions For Polycom phones; troubleshooting instructions For Avaya/Nortel 1120E/1140Etroubleshooting information for Cisco ATAs; and network troubleshooting information (requires EID login).

Business and Analog service is supported by the ITS Switchroom (512-471-5711 option 1 or submit an on-line trouble ticket: https://utdirect.utexas.edu/tn/tr/index.WBX).  SLA for resolution is within two (2) business days except in cases of in building network issues.

If you are uncertain whether the phone service is Basic or Business, look up the class of service here (requires EID login) or contact the ITS Help Desk at 512-475-9400.

Information about Black Box support following the deployment of the new service can be found here.

Updating Caller ID information

Send an email to the ITS Assignment Office at assignment@its.utexas.edu.

Moving Sets

Moving a phone from one office to another (phone subscriber/owner remains the same)

ITS Voice Services VoIP phones can be moved from one office to another by the Unit without the involvement of ITS.  The jack that the phone is being moved to needs to be patched into a network switch that is running an ITS Voice VLAN.  Unit TSC is responsible for ensuring updated port mapping information (required for 911).

When to avoid running the Voice VLAN and Multi-VLAN Access Port (MVAP) on a switch port  

Generally, it is recommended to run the Voice VLAN and MVAP protocol on all capable switch ports to enable maximum portability of VoIP phones.  However, there are cases where running MVAP on a port can cause problems and these switch ports should be exempted by the TSC.  The Voice VLAN/MVAP should be excluded for switch ports for:

  • a DHCP server
  • a firewall
  • a router 

Moving a phone to a different building which has not yet been converted to the new VoIP service

The new VoIP phones cannot be used in a building before the building has been converted to the new Voice Service.

Moving phones between buildings already converted to the new VoIP service

When moving phones between buildings already depolyed with the new VoIP service, be aware that the network subnets used for addressing VoIP devices have a fixed capacity. The size of these subnets does not increase dynamically as VoIP devices are added.  Large moves of VoIP devices between buildings may require changing the size of a building's VoIP subnet.  ITS recommends checking current IP usage in the VoIP subnet of the building being moved to.  Soft phones and mobile VoIP clients do not use IP addresses from a building's VoIP subnet. 

Moving Avaya/Nortel 1120E and 1140E sets

The Avaya/Nortel sets utilize the LLDP protocol which is only being configured on a building basis.  As a result, devices are only portable within the building.  For exceptions contact ITS Networking.

Installing or Changing Service - Order Forms

Ordering a new phone/phone service, discontinuing phone service, or changing phone service features

Submit a Line and Instrument Order Cover and Detail Sheet to the Central Business Office at nt@its.utexas.edu:

Supported phone sets

Please see UT VoIP Phones for a comparison of supported VoIP desksets.  

Voicemail Service Requests

Adding, reassigning, or canceling UT Voicemail (UTVM) 

Visit the UTVM service request page for instructions.

VoIP Soft and Mobile Clients

Ordering a VoIP soft/mobile client

Submit a VoIP Soft/Mobile Client Request Form to the Central Business Office at nt@its.utexas.edu:

Note that only the Genband Personal Communicator (Windows) is currently available.

International Long Distance

Obtaining an international long distance authorization code

Submit an International Long Distance Authorization Request to the Central Business Office at nt@its.utexas.edu:

For questions regarding domestic authorization codes, contact the ITS Long Distance Office at (512) 471-UTLD (8853).