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Troubleshooting Serial Line Problems
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...Extended ping Tests •Troubleshooting Clocking Problems •Adjusting Buffers •Special Serial Line Tests •Detailed...solutions to those problems. Table 15-5 Serial Lines: Troubleshooting Serial Line Input Errors...
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37
TAC
www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1915.html
04 Apr 2008
This chapter presents general troubleshooting information and a discussion of tools and techniques for troubleshooting serial connections. The chapter consists of the following sections:
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24
TAC
www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a00800a758d.shtml
09 Sep 2005
This document describes how to troubleshoot a packet over SONET (POS) router interface that has a line protocol status of "down".
www.cisco.com/en/US/tech/tk482/tk607/technologies_white_paper09186a0080094699.shtml
19 May 2006
When a serial line does not come up as it must, the best way to troubleshoot the circuit is to perform loopback tests. Loopback tests allow you to isolate pieces of the circuit, and test them separately. Begin loopback tests on the customer premises with channel service unit/data...
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86
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www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a00800a754b.shtml
06 Mar 2008
This document helps troubleshoot router interfaces and modules. The document also discusses the causes of the problems, as well as basic procedures to troubleshoot, identify, and solve the problems.
www.cisco.com/en/US/products/hw/modules/ps2641/products_tech_note09186a008076b147.shtml
07 Dec 2006
...Troubleshoot the serial line as described in the "Troubleshooting Clocking Problems" section and the...Troubleshooting Serial Lines for additional information on troubleshooting serial problems and clocking problems...
www.cisco.com/en/US/docs/routers/access/ics7750/software/26/troubleshooting/guide/tsseria2.html
09 Sep 2002
...Troubleshoot the serial line as described in "Troubleshooting Clocking Problems" section and "Using...Troubleshooting Serial Lines for additional information on troubleshooting serial problems and clocking problems...
www.cisco.com/en/US/docs/routers/access/ics7750/software/24/troubleshooting/guide/tsserial.html
28 Jun 2002
...Troubleshoot the serial line as described in the "Troubleshooting Clocking Problems" section and the...Troubleshooting Serial Lines for additional information on troubleshooting serial problems and clocking problems...
www.cisco.com/en/US/docs/routers/access/ics7750/software/25/troubleshooting/guide/tsseria2.html
17 Jul 2002
This document demonstrates basic techniques and commands to troubleshoot and debug VoIP networks. An overview of the Voice Call Flow and Telephony Architecture in a Cisco Router is presented, followed by a step-by-step VoIP troubleshooting approach presented in these steps:
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5
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www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080094045.shtml
11 Oct 2005
The hardware loopback plug test is used to see if the router has any faults. If a router passes a hardware loopback plug test, then the problem exists elsewhere on the line.
References:
48
TAC
www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a008010059a.shtml
19 Nov 2007
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