cisco switch to non cisco ip phone

[7740090]

I have a shoretel phone going to a cisco switch. The only Vlan on the this switch is the voice vlan. should I set my switchport mode to trunk or access for the shortel phone.

 

[7740090]

Here is some more info on the probelm.




My probelm is that the shoretel phones will not come up unless I hard code the mgcp voice switch that needs to controll it in the phone. If I do not hard code it it will get the correct ip from the voice Vlan but it will not come up. I have a dchp server configured with option 156. and the cisco router has ip helper configured on it.One other thing that I was wondering. Is that one of may access switches is just strickly for ip phone so on the switch ports should it be
switchport access or switchport trunk. The shoretel phone talks the the shortel server via mgcp.

 

[whykap]

don't know much about shoretel but I remember certain models requiring FTP option 155 instead of 156.
You'll probably get more help on the Shoretel forum.

 

[unclerico]

if the only thing on the switch port will be the phone then configure it as an access port in the voice vlan. you can also configure an lldp-med profile to set the dscp values for voice bearer traffic and signaling traffic unless these values come from the shoretel call manager. configure your ingress qos policy on the switch ports to trust the dscp markings coming from the phone, that is if you have a qos policy in place at the edge.

I hate all Uppercase... I don't want my groups to seem angry at me all the time! =)
- ColdFlame (vbscript forum)

 

[VinceWhirlwind]

Switchport access.

DHCP gives the phone its own IP address. If the phone is getting the IP address, then the IP Helper is working and DHCP is working.

The phone also needs the IP address of the voice server/gateway (they *really* shouldn't be calling it a "switch") which it needs to get from DHCP, but if it isn't getting it, either you're using the wrong Option, or you've formatted the entry wrongly.

 

[7740090]

Thanks for all the info. Finally got it working by turning off cdp on the switchports the phones were connecting to.