I have a TDE100 with TVA50 vm that the carrier was changed from T1 to Verizon Fios. Working for years with no problems. Now, when calling into the system you reach auto attendant, then when you dial an extension like 101, intermittently it goes to 110. Same with 137 goes to 113, etc. It seems to be doubling the first digit. We have changed and re-programmed both VM and TDE100 from scratch. Same intermittent problem continues. Verizon says not there problem. Has anyone else run into this or have any suggestions? Problems all started when carrier changed to FIOS.