[cisco-voip] 7960 talking to two separate call manager systems

[Paul Yago]

My understanding is that CCM clusters should not co-exist on the same
network and therefore multiple lines from different clusters is not a
supported feature of the phones. We have this problem in our small
enterprise, where there is one network segment and 2 (sometimes 3) CCM
clusters, and one DHCP server with the TFTP option enable for only one
of the CCMs. 

 

In order to switch CCMs, I just have everyone switch the TFTP settings
on the phone as suggested below. But sometimes even this doesn't work.
The Device information is cached in the phones and even when I erase the
configuration, disable DHCP, and modify the TFTP setting, the phone will
connect to the wrong CCM. Only by temporarily disabling the TFTP service
on the wrong CCM, am I able to connect to the right one.

 

Anyway, I hope this helps a bit. Good luck.

 

Paul

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Wednesday, July 06, 2005 2:23 PM
To: Cisco VoIP Users List
Subject: Re: [cisco-voip] 7960 talking to two separate call manager
systems

 

Do you mean at the same time or at different times? If you need at
different times, than yes, you can use alternate TFTP settings for this.
If you need them at the same time, than I'm pretty sure you cant. If you
need a phone with a lines from different CallManagers, I would suggest
getting a business style analog set with multiple line support (some
support up to 8) and plug these into FXS ports on the different
CallManagers.

 

-----
-----
Lelio Fulgenzi, B.A.
lelio at uoguelph.ca.eh
Network Analyst (CCS)
University of Guelph                             FAX:(519) 767-1060 JNHN
Guelph, Ontario N1G 2W1                          TEL:(519) 824-4120
x56354
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^
mob lawyer: your people insulted my brother.
dr. house: what? romano in the parmesan cheese shaker again?

	----- Original Message ----- 

	From: Eric S. Johnson <mailto:esj at cs.fiu.edu>  

	To: cisco-voip at puck.nether.net 

	Sent: Wednesday, July 06, 2005 5:05 PM

	Subject: [cisco-voip] 7960 talking to two separate call manager
systems

	 

	Hi,
	
	>From my quick perusal of the docs it seems this is probably
impossible
	but I will throw out the question to see if I have missed
something:
	
	Can a single 7960 phone talk to two separate call managers and 
	present two lines, one from each system?  Not two CM's backing
each other
	up, but two distinct call manager systems? 
	
	If so how do I work this magic?
	
	Thanks for any pointers
	E
	
	_______________________________________________
	cisco-voip mailing list
	cisco-voip at puck.nether.net
	https://puck.nether.net/mailman/listinfo/cisco-voip

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://puck.nether.net/pipermail/cisco-voip/attachments/20050706/ff8ce818/attachment-0001.html