We continue working to deploy new Wireless Data plans. This week we’ve stumbled on an issue in the edge router. It does not appear to be properly detecting the OSPF routes. This problem manifests itself when the 4th octet of the IP address assigned by the PDSN to a handset exceeds “128”. Whenever a higher …
Author Archives: russell
SPAM, Sendmail and favicon.ico
I’ve been working on site administration for the last couple of days. To reduce the volume of SPAM-bots registering on the message boards I installed a modification in early June. Unfortunately I neglected to test the modification adequately and it had the unintended consequence of stopping not only the SPAM-bots but also legitimate users. My …
Overview of E-9-1-1
I was recently asked to provide a parlor brief on Wireless E-9-1-1. Wireless E-9-1-1 allows a handset to be located. There are three phases of E-9-1-1: Phase 0 provides the call-back number only, no location information. Phase I provides the location of the cellular tower from which the 911 call was made. Phase II provides …
Deploying Wireless Data
For the last few days I’ve been working on defining new data products in a CDMA network. This is my first foray into wireless data so most of the actions are completely foreign. There seems to be no comprehensive procedural guide. Our vendor has Subject Matter Experts (SME) for each of the various components. But …
Telecoms racks needn’t be orderly
We’ve started a forum on Teletips Network called Cable Conundrums for sharing pictures of telecoms racks. Our first post doesn’t actually look too bad; though the camera was uncharacteristically kind. In person the racks seem far messier. The pictures show these racks from the front. From behind the cabling looks far worse. Dangerously so. There …