Manual Cisco Systems OL-21035-01

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  • Cisco Systems OL-21035-01 - page 1

    CH A P T E R 6-1 Cisco Unified IP Phone Administ ration Guide for Cisc o Unified Communications Man ager 8.0 OL-21035-01 6 Troubleshooting and Maintenance This chapter provi des information that can assist you in tr oubleshooting probl ems with your A T A 187 or with your IP telepho ny netwo rk. It also ex plains ho w to clean and maintain your pho ...

  • Cisco Systems OL-21035-01 - page 2

    6-2 Cisco Unified IP Phone Administ ration Guide for Cisco Unified Communications Manager 8.0 OL-21035-01 Chapter 6 Troubleshootin g and Maintenance Resolving Startup Problems – Disconnect a functioning p hone from another port and co nnect it to this networ k port to v erify the port is activ e. – Connect the phone t hat will not start up to a ...

  • Cisco Systems OL-21035-01 - page 3

    6-3 Cisco Unified IP Phone Administ ration Guide for Cisc o Unified Communications Man ager 8.0 OL-21035-01 Chapter 6 Troubleshooting and Maintenance Resolving Startup Problems Verifying DNS Settings If you are using DNS to refer to the TFTP serv er or to Cisco Unif ied Communication s Manager , you must ensure that you hav e specif ied a DN S serv ...

  • Cisco Systems OL-21035-01 - page 4

    6-4 Cisco Unified IP Phone Administ ration Guide for Cisco Unified Communications Manager 8.0 OL-21035-01 Chapter 6 Troubleshootin g and Maintenance Resolving Startup Problems T o create a ne w conf iguration f ile, follo w these steps: Procedure Step 1 From Cisco Unified Commu nications M anager , choose Device > Phone > Find to locate the p ...

  • Cisco Systems OL-21035-01 - page 5

    6-5 Cisco Unified IP Phone Administ ration Guide for Cisc o Unified Communications Man ager 8.0 OL-21035-01 Chapter 6 Troubleshooting and Maintenance ATA 187 Resets Unex pectedly ATA 187 Resets Unexpectedly If users report that their phones are resetting du ring calls or while idle on t heir desk, you should in v estigate the cause. If the netw ork ...

  • Cisco Systems OL-21035-01 - page 6

    6-6 Cisco Unified IP Phone Administ ration Guide for Cisco Unified Communications Manager 8.0 OL-21035-01 Chapter 6 Troubleshootin g and Maintenance ATA 187 Resets Unexpectedly The A T A 187 sends messages w ith request type 151 to ren ew the DHCP address leases. If the DHCP server e xpects messages with request type 150, the le ase will be denied, ...

  • Cisco Systems OL-21035-01 - page 7

    6-7 Cisco Unified IP Phone Administ ration Guide for Cisc o Unified Communications Man ager 8.0 OL-21035-01 Chapter 6 Troubleshooting and Maintenance Troubleshooting ATA 187 Security Checking Power Connection In most cases, a phone will restart if it po wers up by using e xternal po wer b ut loses that connection and switches to PoE. Similarly , a ...

  • Cisco Systems OL-21035-01 - page 8

    6-8 Cisco Unified IP Phone Administ ration Guide for Cisco Unified Communications Manager 8.0 OL-21035-01 Chapter 6 Troubleshootin g and Maintenance General Troubleshoo ting Tips Prolonged broadcast stor ms cause phones to reset, or be unable to mak e or answer a call A prolonged Lay er 2 broadcast storm (lasting se veral minutes) on the voice VLAN ...

  • Cisco Systems OL-21035-01 - page 9

    6-9 Cisco Unified IP Phone Administ ration Guide for Cisc o Unified Communications Man ager 8.0 OL-21035-01 Chapter 6 Troubleshooting and Maintenance Where to Go for More Tro ubleshooting Information Where to Go for More Troubleshooting Information If you ha ve ad ditional questio ns about troubleshoo ting t he A T A 187, se v eral Cisco.com web si ...

  • Cisco Systems OL-21035-01 - page 10

    6-10 Cisco Unified IP Phone Administ ration Guide for Cisco Unified Communications Manager 8.0 OL-21035-01 Chapter 6 Troubleshootin g and Maintenance Cleaning the ATA 187 • Cisco Products and Services (T echn ical Support and Documentation): http://www .cisco .com/cisco/web/support/in dex.html Cleaning the ATA 187 T o clean your A T A 187, use a ...

Manufacturer Cisco Systems Category IP Phone

Documents that we receive from a manufacturer of a Cisco Systems OL-21035-01 can be divided into several groups. They are, among others:
- Cisco Systems technical drawings
- OL-21035-01 manuals
- Cisco Systems product data sheets
- information booklets
- or energy labels Cisco Systems OL-21035-01
All of them are important, but the most important information from the point of view of use of the device are in the user manual Cisco Systems OL-21035-01.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Cisco Systems OL-21035-01, service manual, brief instructions and user manuals Cisco Systems OL-21035-01. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Cisco Systems OL-21035-01.

A complete manual for the device Cisco Systems OL-21035-01, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Cisco Systems OL-21035-01 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Cisco Systems OL-21035-01.

A complete Cisco Systems manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Cisco Systems OL-21035-01 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Cisco Systems OL-21035-01, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Cisco Systems OL-21035-01, that we can find in the current document
3. Tips how to use the basic functions of the device Cisco Systems OL-21035-01 - which should help us in our first steps of using Cisco Systems OL-21035-01
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Cisco Systems OL-21035-01
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Cisco Systems OL-21035-01 in a specific country, if it was not possible to solve the problem on our own.

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