AVAYA IP phone 1608

[pk2]

Hi All,,

I am very new to avaya i have avaya ip office business ed 8.

many phones (1608) are working fine but three of them stuck on discover XXXXXX when i clear all values its asking for extension after putting the ext phone gets restart.

Regards

[furrerm]

Discover means that the phone can not see the Call server. They might ask for an extension fine, and authenticate, but if they can not route to teh call server, you get discover.

Are the phones on the same subnet as the IPO? If so, is there a route built? if not, build one.

[havel3]

If a working phone suddenly goes into discovery mode then the keepalive packets from the gatekeeper aka IP Office are not confirmed by the phone and then the Gatekeeper discard the phone and it gets unregistered and the phone goes in discovery mode.
This can happen due to a switch overload/failure, a dual IP Address in the same subnet, a bad CAT 5 cable and other network related issues which blocks the UDP Keepalive packets or ACKs.

[oiduran]

are the IPO and the phone in the same subnet? What is the router address for the phone?

[pk2]

HI ,,

yes subnet is same vlan conf is
CORE.

interface Vlan20
description AVAYA-SERVER
ip address 172.20.20.1 255.255.252.0
ip helper-address 172.20.20.10

Access Switch

interface GigabitEthernet1/0/4
switchport access vlan 20
switchport mode access
spanning-tree portfast

any help 1 more phone gose to this mode discover even i connected directly in with core.


Thanks in Advance

[havel3]

One DHCP server?