Cisco Cisco Expressway Release Notes
■
■
■
Notable Issues in this Version
: Upgrading Expressway to X8.7.2 breaks SSL Handshake with CUCM or IM&P 9.x (also affects
Jabber Guest Server)
An upgrade of CiscoSSL in this version of Expressway prevents it from accepting weak DH keys. If you have not yet
applied this security improvement to your Cisco Unified Communications Manager or Cisco Unified Communications
Manager IM and Presence Service infrastructure, they may not be able to communicate securely with Expressway.
This could prevent your MRA deployment from working as expected.
applied this security improvement to your Cisco Unified Communications Manager or Cisco Unified Communications
Manager IM and Presence Service infrastructure, they may not be able to communicate securely with Expressway.
This could prevent your MRA deployment from working as expected.
We strongly recommend that you upgrade Cisco Unified Communications Manager and Cisco Unified
Communications Manager IM and Presence Service to the latest version of 10.x or 11.x .
Communications Manager IM and Presence Service to the latest version of 10.x or 11.x .
This issue also affects Jabber Guest Server versions before 10.6.9. We strongly recommend that you upgrade to the
latest version of Jabber Guest Server.
latest version of Jabber Guest Server.
: DTMF mid-call features not supported for Mobility-enabled Users
(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.
7
Cisco Expressway Release Note
Limitations