multiple 'phone' tags ?

A local auto dealership has multiple phone numbers …

local number
toll-free for sales
toll-free for service

Other large businesses also have multiple direct nmbers.

Is there a tag format/method to assign more than one ‘phone’ to a node ?

For multiple entries two methods are in use:

1. Separate by “;”
phone=00317112345678;00317187654321

2. Use :N (where N is 1,2,3,…)
phone:1=00317112345678
phone:2=00317187654321

Also read:
http://wiki.openstreetmap.org/wiki/Key:phone
http://wiki.openstreetmap.org/wiki/Key:contact