Instruction/ maintenance manual of the product OL-21035-01 Cisco Systems
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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.
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.
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 .
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 i.
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.
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.
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.
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 s.
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.
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 .
An important point after buying a device Cisco Systems OL-21035-01 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Cisco Systems OL-21035-01 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Cisco Systems OL-21035-01 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cisco Systems OL-21035-01 you will learn all the available features of the product, as well as information on its operation. The information that you get Cisco Systems OL-21035-01 will certainly help you make a decision on the purchase.
If you already are a holder of Cisco Systems OL-21035-01, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Cisco Systems OL-21035-01.
However, one of the most important roles played by the user manual is to help in solving problems with Cisco Systems OL-21035-01. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cisco Systems OL-21035-01 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
