Devices Overview
Devices provide a connection between a physical IP phone (e.g. your desk phone, computer, smartphone, etc.), the phone system, and associated calling features (e.g. phone number, extension, etc.). Devices can also act as endpoints for a call routing path. For example, a phone number can be routed to a device, or a device can be part of a ring group. Users can also place phone calls from their devices to internal and external endpoints. In the simplest case, a device ties a physical IP endpoint to a logical endpoint on your phone system.
Additional features available for devices include a timeout and failover destination, unique Caller ID, and a specific Access Control List (ACL).
Physical Device Configuration SIP Devices
The physical device configuration SIP devices vary greatly by manufacturer. As long as the device is SIP-compliant, you can configure it with the Login and Password for the device to register to the associated instance. If you are not sure how to configure your device, please consult technical support or device manufacturer.
Call Parking
Access call parking by pressing *9 (Star 9) while on an active call. The system will place the caller on hold, read back an extension number from (1000-1999), and hang up your end of the call. The caller is now parked on an extension with hold music until retrieved by again dialing * 9 (Star 9) while not on a call and entering the extension of the parked caller. Parked calls cannot be picked up on a different instance than the one they were originally parked on. Call parking cannot be accessed on inbound calls that traversed a ring group.
Dialing Rules When Calling the US/Zone 1
It is not necessary to enter a 1 (one) before the number. Calling international requires a 011 or + to be sent before the number. Calls sent to a device will be sent with the username in the SIP INVITE.
Allowed Codecs
PCMU (G.711u), PCMA (G.711a), G.722, and GSM, which are all recommended at 20 ms ptime.