Polycom Trio 8800 User Manual page 99

on the Skype for Business server, users can make calls to the emergency numbers from the Skype for
Business client or from a phone, even when the phone is locked.
Polycom phones receive emergency numbers through in-band provisioning and can conflict with the
emergency dial string and mask. When a phone receives both multiple emergency numbers and emergency
dial string and mask, the client and phone use multiple emergency numbers.
For instructions on creating a multiple emergency number dial plan, see
Numbers in Skype for Business 2015
SIP URI Dialing
When making a URI call, Polycom Trio 8500 and 8800 systems allow dial plan matching for SIP URI calls
to append strings to the dialed number. SIP URI dial plan can also be used with auto line switching in Hybrid
registration scenarios to automatically select the line based on dial plan.
The following examples illustrate the semantics of the syntax:
● sip\:764xxxxxRR@registrar.polycomcsn.comR - appends @registrar.polycomcsn.com to any
URI calls matching with "764xxxxx".
For example, if you make a SIP URI call with 76412345 then @registrar.polycomcsn.com is
appended to the string such that the SIP URI call INVITE becomes
sip::76412345@vc.polycom.com. Here, @domain string is required only for SIP URI calls from
unregistered lines.
● sip\:xxxx\@registrar\.polycomcsn\.com - This will match with any four digit URI calls having the
domain @registrar.polycomcsn.com.
For example, if you configure three lines and enable dial plan-based line switching, and the third line's
dial plan is sip\:xxxx\@registrar\.polycomcsn\.com then calls will be initiated from the third line
if you dial 1234@registrar.polycomcsn.com because it matches the third line's dial plan.
Polycom, Inc.
on Microsoft TechNet.
Configure Multiple Emergency
Call Controls
99