Verilink XEL XSP-100 SHARK IAP (9SA-USRS-9.0R1.02) Product Manual - Manual (Page 212)

Chapter 9- Hardware Specifications
Chapter 9-12 XEL P/N & Release: 9SA-USRS-9.0R1.02 SHARK™ IAD User's Guide
P
OWER
O
UTPUT
Ring Generator Ringing 72 V RMS 15 VA
Ringer
Equivalency
Number 15 REN
No more than 5
per line.
Load Regulation Ringing 70 ± 3 vrms
Output Noise Ringing < 5% THD