Cisco Cisco Expressway
How DVO-R works with Expressway Mobile and Remote Access
1.
When you dial a number, a signal is sent to Cisco Unified Communications Manager over the IP path (WLAN or
mobile network). See stage 1 of
mobile network). See stage 1 of
.
2.
Cisco Unified Communications Manager calls your mobile number or the Alternate Number you set (see stage
2 of
2 of
.)
3.
When you answer, Cisco Unified Communications Manager extends the call to the number you dialed and you
hear ring back (see stage 3 of
hear ring back (see stage 3 of
).
4.
When the person answers, the ongoing call is hairpinned at the enterprise PSTN gateway.
■
If you made the call using a Mobile Identity, your call is anchored at the enterprise gateway. The call is active
on your mobile and desk phone, so you can switch between the two (see stage 4 of
on your mobile and desk phone, so you can switch between the two (see stage 4 of
).
■
If you specified an Alternate Number, your ongoing call is not anchored and you cannot pick up on your desk
phone (see stage 4 of
phone (see stage 4 of
).
Note the following:
■
You can use Dual Tone Multi Frequency-based (DTMF) mid-call features (for example *81 for hold) on
anchored calls if there is out-of-band DTMF relay between the PSTN gateway and Cisco Unified
Communications Manager. You cannot utilize mid-call features when using an Alternate Number.
anchored calls if there is out-of-band DTMF relay between the PSTN gateway and Cisco Unified
Communications Manager. You cannot utilize mid-call features when using an Alternate Number.
■
To prevent the callback leg from Cisco Unified Communications Manager routing to your voicemail — thus
stopping the voicemail call going through to the person you are dialing — Cisco recommends that you set your
DVO-R voicemail policy to ‘user controlled’. This ensures you must generate a DTMF tone by pressing any key
on the keypad before your call can proceed.
stopping the voicemail call going through to the person you are dialing — Cisco recommends that you set your
DVO-R voicemail policy to ‘user controlled’. This ensures you must generate a DTMF tone by pressing any key
on the keypad before your call can proceed.
Note:
Although this feature now works for users calling over Mobile and Remote Access, there is no configuration on
the Expressway. There is some configuration required on the Unified CM nodes and Cisco Jabber clients.
Configuration checklist for DVO-R
1.
Set up Cisco Unified Communications Manager to support DVO-R.
2.
Set up DVO-R for each device.
3.
Set up user-controlled voicemail avoidance.
4.
Add Remote Destination (optional).
5.
Configure Cisco Jabber client settings.
See Configuring Dial via Office-Reverse to Work with Mobile and Remote Access at
for more information.
Checking the Status of Unified Communications Services
You can check the status of the Unified Communications services on both Expressway-C and Expressway-E.
1.
Go to Status > Unified Communications.
2.
Review the list and status of domains, zones and (Expressway-C only) Unified CM and IM&P servers.
Any configuration errors will be listed along with links to the relevant configuration page from where you can
address the issue.
address the issue.
Mobile and Remote Access Port Reference
This section summarizes the ports that could potentially be used between your internal network (where the
Expressway-C is located) and the DMZ (where the Expressway-E is located) and between the DMZ and the public
internet.
Expressway-C is located) and the DMZ (where the Expressway-E is located) and between the DMZ and the public
internet.
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Mobile and Remote Access Through Cisco Expressway Deployment Guide
Checking the Status of Unified Communications Services