Cisco Cisco Expressway Release Notes
(This issue is present in Cisco Unified Communications Manager version 11.0)
For end users who have mobility enabled, DTMF-based mid-call features (for example, *81 - Hold, *83 - Resume) are
not supported, regardless of the DTMF Signaling Method setting for the SIP trunk. This issue is present for all SIP
trunks due to issues with SIP signaling and MTP allocation. There is no workaround for this issue.
not supported, regardless of the DTMF Signaling Method setting for the SIP trunk. This issue is present for all SIP
trunks due to issues with SIP signaling and MTP allocation. There is no workaround for this issue.
Note
: DTMF for User Controlled Voicemail avoidance and for navigating IVRs at the far-end are both supported.
: SDP Decode Fails when Trying to Split IM&P and Video From Lync
This issue in X8.6 and X8.7 prevents a previously published Lync federation deployment from working as it did in
X8.5. If you are using the affected deployment, we recommend that you do not upgrade yet.
X8.5. If you are using the affected deployment, we recommend that you do not upgrade yet.
The affected deployment is documented in Appendix 1: Federation, of the X8.5 version of Microsoft Lync and Cisco
Expressway Deployment Guide, on the
Expressway Deployment Guide, on the
.
Limitations
Unsupported Features (General)
■
DTLS is not supported through the Expressway-C/Expressway-E. SRTP is used to secure calls instead;
attempts to make DTLS calls will fail.
attempts to make DTLS calls will fail.
■
SIP UPDATE method. Features that rely on the SIP UPDATE method (
) will not work as expected
because the Expressway does not support this method.
■
Audio calls may be licensed as video calls in some circumstances. Calls that are strictly audio-ONLY consume
fewer licenses than video calls. However, when audio calls include non-audio channels, such as the iX
channel that enables ActiveControl, they are treated as video calls for licensing purposes.
fewer licenses than video calls. However, when audio calls include non-audio channels, such as the iX
channel that enables ActiveControl, they are treated as video calls for licensing purposes.
Unsupported Endpoint Features When Using Mobile and Remote Access
Note:
This list contains known limitations and is not exhaustive. The MRA deployment does not necessarily support
pass through of line-side features provided by Cisco Unified Communications Manager. Absence of such items from
this list does not imply that they are supported.
this list does not imply that they are supported.
■
Calls to/from additional lines on IP phones and endpoints that support multiple lines; only the primary line is
supported via Mobile and Remote Access
supported via Mobile and Remote Access
■
Directory access mechanisms other than UDS
■
Certificate provisioning to remote endpoints e.g. CAPF
■
Features that rely on the SIP UPDATE method (
) will not work as expected because the Expressway
does not support this method. For example, CUCM and endpoints use UPDATE to implement blind transfer,
which does not work correctly via MRA.
which does not work correctly via MRA.
■
Peer-to-peer file transfer when using IM and Presence Service and Jabber is unsupported via MRA
—
Managed File Transfer (MFT) with IM and Presence Service 10.5.2 (and later) and Jabber 10.6 (and later)
clients is supported via MRA
clients is supported via MRA
—
File transfer with WebEx Messenger Service and Cisco Jabber is supported via MRA
■
Deskphone control (QBE/CTI)
■
Additional mobility features including GSM handoff and session persistency
■
Hunt group/hunt pilot/hunt list
■
Self-care portal
■
Support for Jabber SDK
■
Shared lines are supported in a limited way. Multiple endpoints can share a line but in-call features (like
hold/resume) only work on the first endpoint that answers. Endpoints sharing the line may not correctly
recognise the state of the call.
hold/resume) only work on the first endpoint that answers. Endpoints sharing the line may not correctly
recognise the state of the call.
7
Cisco Expressway Release Note
Limitations