<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>A customer just posed a question to me and I couldn't find anything on google.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Are there any interoperability issue with using Nortel LAN switches with Cisco IP Phones. The CIO for this customer is looking to save some $ by using non-cisco ip phones. </DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>My first thoughts were that the Cisco switch provides two things, power and voice vlan support. The nortel switches do support 802.3af so power should not be an issue. But since CDP is a cisco proprietary protocol, the nortel switches won't support CDP which means that the phones will not automatically use the voice vlan for voice traffic. This just means that the customer would have to do something else to segregate and QoS the voice traffic such as an acl.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Are there any other considerations?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>tm</DIV><DIV> </DIV><DIV>Tim Medley</DIV><DIV>Moxie Enterprises</DIV><DIV>Email: <A href="mailto:tim.medley@moxieent.com">tim.medley@moxieent.com</A></DIV><DIV>Phone: (704) 905-4604</DIV><DIV> </DIV><DIV><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></BODY></HTML>