RE: Ref: Answer of OEQ

[Harith Kariapper]

Syed’s questions look very interesting. That is why I am forwarding to both groups.

 

Q1)  DHCP Question

 

Your colleague is configured the following on the router. He experience problem with IP phones. They doesn't get their configuration from TFTP server. What command you colleague is missing?
You can accept that there isn't any Layer 1, Layer 2 and Layer 3 problems.

 

ip dhcp pool IPT
network 10.0.0.0 255.255.255.0
default-router 10.0.0.1
option 150 ip 20.0.0.1

 

 

My comments:

 

• Most likely they would have given wrong default-router address. Then it will be default-router issue.
• May be your TFTP server ip address is not 20.0.0.1
• What command is he missing?  I don’t have the answer. Any one of you can answer this?

 

Q2)

 

Telephony call-legs: 1
SIP call-legs: 1
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2
12E6 : 137 531948680ms.1 +1570 pid:20001 Answer 5001 active dur 00:00:08 tx:205/32800 rx:218/34880 Tele 50/0/1 (137) [50/0/1.0] tx:4100/4100/0ms g711ulaw noise:0 acom:0 i/0:0/0 dBm
12E6 : 138 531949340ms.1 +890 pid:4000 Originate 2400 active dur 00:00:08 tx:420/67200 rx:442/70720 IP 142.100.64.14:24584 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off media inactive detected:n media contrl rcvd:n/a timestamp:n/a long duration call detected:n long duration call duration:n/a timestamp:n/a

Which is the number of the SIP dial-peer?

 

 

My comments

 

The above output comes from “ sh call active voice brief” command.

 

You can make a call from R3 and verify this.

 

The first highlight pid:20001 Answer 5001 indicates that the call is made from DN 5001 which has the dial-peer tag 20001. ( This dial-peer is created by CME or SRST  when the dn is registered.)

 

The second highlight pid:4000 Originate 2400 indicates that the call is going to 2400 which has the dial-per tag 4000.

 

As per this question the answer should be 4000.

 

Thank You.,

Harith Kariapper

B.Sc.Eng., CNE, MIBM, MCSE, JNCIA, CCSI
Quadruple CCIE #8661 (Voice, SP, Security, R/S)
www.winnetsystems.co.uk          44-207-096-1039
www.winnet.ca                             1-416-447-8378

---

From: Syed Aziz
Sent: Wednesday, March 24, 2010 3:45 PM
To: kari...@gmail.com
Subject: Re: Ref: Answer of OEQ

 

Also for this too.

 

3. Your colleague is configured the following on the router. He experience problem with IP phones. They doesn't get their configuration from TFTP server. What command you colleague is missing?
You can accept that there isn't any Layer 1, Layer 2 and Layer 3 problems.

 

ip dhcp pool IPT
network 10.0.0.0 255.255.255.0
default-router 10.0.0.1
option 150 ip 20.0.0.1

 

My answer would be : they might not have DHCP SERVICE enabled on the router. Please verify.

 

 

 

Thanks

 

 

 

 

On Wed, Mar 24, 2010 at 11:35 AM, Syed Aziz wrote:

Assalamul alaikum

 

Harith could you please tell the answer of this question.

 

 

Telephony call-legs: 1
SIP call-legs: 1
H323 call-legs: 0
Call agent controlled call-legs: 0
SCCP call-legs: 0
Multicast call-legs: 0
Total call-legs: 2
12E6 : 137 531948680ms.1 +1570 pid:20001 Answer 5001 active dur 00:00:08 tx:205/32800 rx:218/34880 Tele 50/0/1 (137) [50/0/1.0] tx:4100/4100/0ms g711ulaw noise:0 acom:0 i/0:0/0 dBm
12E6 : 138 531949340ms.1 +890 pid:4000 Originate 2400 active dur 00:00:08 tx:420/67200 rx:442/70720 IP 142.100.64.14:24584 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g711ulaw TextRelay: off media inactive detected:n media contrl rcvd:n/a timestamp:n/a long duration call detected:n long duration call duration:n/a timestamp:n/a

Which is the number of the SIP dial-peer?

 

This question someone got. 

 

 

Remember me and the Asif in your dua.

 

wassalam

 

Syed Aziz