Advanced Forwarding Settings
By combining Call Forwarding, Call Forwarding (No answer), Call Forwarding (Busy) and Ringer time, you may create more advanced call forwarding settings.
Here are a few rules that may be useful to remember:
- Only a single destination can be set in the [Forwarding destination (No answer/Busy)] field.
- When Call Forwarding is set for an extension, the ringer time for the call depends on the setting of Call Forwarding (No answer/Busy). If no one answers the call during the Ringer time, the original call recipient’s (not the forwarding destination’s) [Forwarding destination (No answer)] will be applied. (Please refer to section 7.3.1 below for more information.) If none of the forwarding destinations can establish a call or if all forwarding destinations are busy, [Forwarding destination (Busy)] will be applied.
- After the call is forwarded by Busy Call Forwarding or No Answer Call Forwarding, the forwarding destination’s setting in the [Forwarding destinations], [Forwarding destination (No answer)] and [Forwarding destination (Busy)] fields will be used and the call may be transferred to another destination. (Please refer to section 7.3.2 below for more details.)
- In the following examples, the default setting is used for each phone’s ringer time.
1. Example 1: Ringer Time & Forwarding Destination (No Answer/Busy)
Extension: 001
| Other Forwarding Destinations* | 101, 102 |
| Ringer time (sec) | 20 |
| Forwarding destination (No answer) | vm001 |
| Forwarding destination (Busy) | vm001 |
Extension: 101
| Other Forwarding Destinations* | |
| Ringer time (sec) | 15 |
| Forwarding destination (No answer) | vm101 |
| Forwarding destination (Busy) | vm101 |
Extension: 102
| Other Forwarding Destinations* | |
| Ringer time (sec) | 25 |
| Forwarding destination (No answer) | vm102 |
| Forwarding destination (Busy) | vm102 |
- All incoming calls to extension 001 are forwarded to both extensions 101 and 102.
- Extension 101 rings for 15 seconds and Extension 102 rings for 20 seconds (not 25) if neither extension 101 nor 102 answers the call.
- The call will then be forwarded to extension 001’s voicemail inbox vm001.
User 001’s Ringer time and Call Forwarding (No answer) settings are treated as the highest priority, even when extensions 101 and 102 have set up call forwarding (No answer) on all of their calls. The Ringer time for extension 001 is set for 20 seconds, so that is the maximum ringer time for any of the forwarding extensions. Even after User 101’s ringer stops, extension 102 continues ringing until 20 seconds has passed. If no one answers, the call will be forwarded to extension 001’s voicemail (extension vm001).
With the settings above, incoming calls to extension 001 will be transferred to both extensions 101 and 102. If neither extension 101 nor 102 answers the call, it will be forwarded to the destination specified in User 001’s [Call Forwarding (No answer)] field. The [Call Forwarding (No answer)] settings for extensions 101 and 102 will not be used.
2. Example 2: Ring Group and Call Forwarding
Extension: 000
| Other Forwarding destinations* | 001 |
| Ringer time (sec) | 5 |
| Forwarding destination (No answer) | 001A |
| Forwarding destination (Busy) | 001A |
Extension: 001A
| Other Forwarding destinations* | 100A, 200A |
| Ringer time (sec) | 10 |
| Forwarding destination (No answer) | 001B |
| Forwarding destination (Busy) | 001B |
Extension: 001B
| Other Forwarding destinations* | 100B, 200B |
| Ringer time (sec) | 10 |
| Forwarding destination (No answer) | vm001 |
| Forwarding destination (Busy) | vm001 |
Extension: 100A
| Group Extensions* | 101, 102, 103 |
Extension: 200A
| Group Extensions* | 201, 202 |
Extension: 100B
| Group Extensions | 111, 112, 113, 114, 115, 116 |
Extension: 200B
| Group Extensions | 211, 212, 213, 214 |
- All incoming calls to extension 000 are forwarded to extension 001.
- When a call is unanswered for 5 seconds, it is forwarded to 001A.
- The call is then forwarded to 100A and 200A.
- Extensions 101, 102, 103, 201 and 202 will ring.
- If extension 001’s [Ringer Time] is more than 5 seconds, 001 will continue to ring even after 5 seconds.
- If the call is unanswered for 10 seconds, it is forwarded to extension 001B.
- The call is then forwarded to 100B and 200B.
- Extensions 111, 112, 113, 114, 115, 116, 211, 212, 213 and 214 will ring.
- If the call is unanswered for 10 seconds, it is forwarded to extension 001’s voicemail inbox (vm001).
- When vm001 answers the call, all ringing will stop.
Meanwhile, all extensions that receive the call will keep ringing until their own Ringer time settings expire or the call is answered.
- For this example, we used letters for the extension numbers in order to clarify different groups.
- If a caller is using a SIP UA that allows letters, the caller can make a call directly to an extension that includes letters, such as 100B.