Option 151 for AVPP address

[dcourter]

I am trying to setup my new DHCP server to work with all my devices. I find plenty of documents that say I need option 151 setup for the AVPP IP address but not one that gives the format of the entry. Just putting in the IP does not work and AVPP="IP" does not work and MCIPADD="IP" does not work either. Does any one know the format of this option? Is it a string like option 176? Thank you.

ACA - IP Office Implement

 

[dcourter]

never mind figured it out.

ACA - IP Office Implement

 

[johnromani]

Hello,

This is the stretch of text from document:

H.323 IP phones need the IP address of an H323 Gatekeeper (normally IP Office) and a TFTP server
(normally, the PC running Manager). They do this by requesting the Option 176 settings from the DHCP
server.

1. Right-click on the DHCP server.
2. From the pop-up menu, select Predefined options.
3. Select Add.
4. Enter the following information:
• Name: 46xxOptions
• Data type: String
• Code: 176
• Description: IP Phone settings

5. Click OK.

6. In the string value field, enter the following:
MCIPADD=xxx.xxx.xxx.xxx,MCPORT=1719,TFTPSRVR=yyy.yyy.yyy.yyy,TFTPDIR=z,VLANTEST=0
where:

• MCIPADD=xx.xxx.xxx.xxx is the H323 Gatekeeper (Callserver) address. Normally, this is the IP Office Unit's LAN1 address. You can enter several IP addresses, separating each by a comma with no space. This allows specification of a fallback H323 gatekeeper.

Note
• The phones will wait 3 minutes before switching to the fallback and will not switch back when the first server recovers, until the phone is rebooted.

• MCPORT=1719 is the RAS port address for initiating phone registration.

• TFTPSRVR=yyy.yyy.yyy.yyy is the TFTP Server IP Address. Normally, this is the IP address of the PC running Manager.

• TFTPDIR=z is the TFTP Server directory where the IP phone files are located. This entry is not required if those files are in the TFTP server's default directory.

• VLANTEST=w is the number of minutes phones should attempt to register on a specific VLAN before defaulting back to VLAN 0. This field is optional. A setting of 0 disables the
fallback to registering on VLAN 0.

• The maximum string length is 127 characters. To reduce the length the TFTP Server address can be specified through attaching an Option 66 entry to the Scope. See
Alternate Options.

7. Click OK.

8. Expand the server by clicking on the [+] next to it.

9. Click on the scope you just created for the 4600 phones.

10. In the right-hand panel, right-click on the scope and select Scope Options.

11. In the general tab, make sure 176 is checked.

12. Verify the String value is correct and click OK.


Cesar Romani
ACS Certified | Comptia Convergence ++ Certified

 

[thrtnastrx]

I'm having the same issue here, I added the IP address into the DHCP 151 field but phones don't get the AVPP address. Is there a string to add before the IP address or is it just the IP address?

ACSS

 

[dcourter]

I created the option as type IP Address then added to scope. ONce in scope you can select and type the IP in. Thats what did it for me.

ACA - IP Office Implement

 

[thrtnastrx]

Thanks. I thought I did that, butI ended up setting up static addresses for the phones.

ACSS